Major rewrite

* use dep for vendoring
* lets encrypt
* moved web to transfer.sh-web repo
* single command install
* added first tests

main.go

@@ -0,0 +1,8 @@
+package main
+
+import "github.com/dutchcoders/transfer.sh/cmd"
+
+func main() {
+	app := cmd.New()
+	app.RunAndExitOnError()
+}