update: log parser dir to input scanning

23-input-scanning/exercises/README.md

@@ -0,0 +1,15 @@
+# Exercises
+
+Let's exercise with the scanner and maps.
+
+1. **[Uppercaser](https://github.com/inancgumus/learngo/tree/master/23-project-log-parser/exercises/01-uppercaser)**
+
+  Use a scanner to convert the lines to uppercase, and print them.
+   
+2. **[Unique Words](https://github.com/inancgumus/learngo/tree/master/23-project-log-parser/exercises/02-unique-words)**
+
+  Create a program that counts the unique words from an input stream.
+
+3. **[Grep Clone](https://github.com/inancgumus/learngo/tree/master/23-project-log-parser/exercises/03-grep)**
+
+  Create a grep clone. grep is a command-line utility for searching plain-text data for lines that match a specific pattern.