fix(guide): simplify directory structure

guide/english/android-development/firebase/connect-to-firebase/index.md

@@ -0,0 +1,44 @@
+---
+title: connecting-to-firebase
+---
+
+# Prerequisites
+1. The Latest Version of Android Studio
+
+<br>
+The easiest way to connect to firebase is to use the firebase assistant. 
+
+# 1. Connecting using Firebase Assistant
+
+1. Create an account in the [Firebase Console](https://console.firebase.google.com).
+Click add project to add your Android Studio project to it. 
+
+2. Install Google Repository
+You can do this by adding the dependency into your project-level build.gradle file like this:
+
+```java
+allprojects{
+  repositories {
+        maven {
+            url "https://maven.google.com" // Google's Maven repository
+        }
+    }
+}
+```
+
+Alternatively, you could do that [using the GUI](https://developer.android.com/studio/write/firebase). 
+
+3. Go to Tools > Firebase and select Connect to Firebase
+
+If you wish to connect to firebase manually, detailed instructions are available [here](https://firebase.google.com/docs/android/setup). 
+<br>
+Having connected your Android Studio project to Firebase, you can either 
+1. click on a product in the firebase assistant and get taken to the Google docs where you will be told how to proceed
+2. go to desired product in **Project Overview** in the Console and click on **Get Started** 
+3. go to the [Firebase docs](https://www.firebase.com/docs/android/quickstart.html) to see how to setup individual products in your project
+
+Reading a combination of all three will enable you to setup the product, which includes adding suitable dependencies to your build.gradle file.
+
+**If You Encounter Gradle Sync**
+Try To Change The Firebase-core Version or Firebase-database version
+

guide/english/android-development/firebase/firebase-storage/setup/index.md

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+---
+title: Setting up Firebase Storage
+---
+
+# Setting up Firebase Storage
+
+## Prerequisites
+1. The latest version of Android Studio
+2. Have connected with Firebase manually or via Firebase Assistant (See [Connecting to Firebase](guide/src/pages/android-development/firebase/connecting-to-firebase)). 
+
+It is recommended that you do this so as to not be confused by partial instructions related to this in the docs mentioned below. 
+
+## Setting it up with Android Studio
+
+After adding Firebase to your project, you will need to add extra dependencies and do some other things in order to setup 
+the Firebase Storage. There are following documentation about this:
+
+* [Firebase](https://firebase.google.com/docs/storage/android/start)
+
+There may be chance of confusion in that documentation or if you are new to firebase then you may face little bit hard to understand it. 
+So follow the belows steps carefully:
+
+
+**Add Gradle Dependencies**
+
+In your app-level build.gradle file, add the following
+
+```java
+dependencies {
+	implementation 'com.google.firebase:firebase-storage:16.0.2'
+}
+```
+## Installation of Firebase Android SDK, permissions and setup code
+Detailed instructions for these can be found [here](https://firebase.google.com/docs/android/setup).
+
+## Resources 
+To learn about how to read from and write to the storage in your Android application, refer to the docs listed below.
+
+* [Upload files from Android
+Firebase Guide](https://firebase.google.com/docs/storage/android/upload-files)
+
+* [Download files to Android
+Firebase Guide](https://firebase.google.com/docs/storage/android/download-files)
+
+## Sample Projects from Firebase Developers
+You can follow up these samples from Firebase developers to get started Firebase storage
+Firebase Quickstart-Android [android-sample](https://github.com/firebase/quickstart-android/tree/master/storage) 
+
+## Note
+Google now deprecated 'compile' and in place of that you need to use 'implementation'.
+

guide/english/android-development/firebase/realtime-database/setup/index.md

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+---
+title: Setting up Firebase Realtime Database
+---
+
+# Prerequisites
+1. The latest version of Android Studio
+2. Have connected with Firebase manually or via Firebase Assistant(See [Connecting to Firebase](guide/src/pages/android-development/firebase/connecting-to-firebase)). 
+<br>
+It is recommended that you do this so as to not be confused by partial instructions related to this in the docs mentioned below. 
+
+# Setting it up with Android Studio
+<br>
+After adding Firebase to your project, you will need to add extra dependencies and do some other things in order to setup 
+the Realtime Database. There are two documentations about this:
+
+1. Firebase quickstart [docs](https://www.firebase.com/docs/android/quickstart.html)
+2. Google [docs](https://firebase.google.com/docs/database/android/start/)
+
+There are some discrepancies between the two. 
+To make up for them, you can follow the Firebase docs, but instead of just using the gradle dependencies listed there, use the following list. 
+That way, you will not miss any steps from either documentation. 
+
+<br>
+
+**Add Gradle Dependencies**<sup>1</sup>
+<br>
+In your app-level build.gradle file, add the following
+<br>
+```java
+dependencies {
+    implementation 'com.firebase:firebase-client-android:2.5.2+'
+    implementation 'com.google.firebase:firebase-database:15.0.0'
+}
+```
+# Installation of Firebase Android SDK, permissions and setup code
+Detailed instructions for these can be found [here](https://www.firebase.com/docs/android/quickstart.html).
+
+# Resources 
+To learn about how to read from and write to the database in your Android application, refer to the two docs listed in References.
+<br>
+You can also find out how to use Firebase products in the Google documentation, but again it is probably a good idea to look at the Firebase docs as well, or anything that might be helpful.
+
+# References
+- FIREBASE, _Android Quickstart_, 17/04/2018, 07/05/2018, https://www.firebase.com/docs/android/quickstart.html
+- GOOGLE, _Set up Firebase Realtime Database for Android_, 05/04/2018, 07/05/2018, https://firebase.google.com/docs/database/android/start/
+
+# Footnote
+The first line comes from the Firebase [docs](https://www.firebase.com/docs/android/quickstart.html) on setting up realtime db in Android Studio.
+<br>
+In the docs, 'compile' is used but that is deprecated and replaced by 'implementation'. 
+<br>
+The second line comes from the Google [docs](https://firebase.google.com/docs/database/android/start/) on setting up realtime db in Android Studio.
+<br>
+If it is actually redundant to add both, please correct this article.