Use implementation over compile (nisrulz#22)

Use implementation over compile in reference local `aar` files as below
And some re-indent

Readme.md

@@ -265,13 +265,13 @@ Few handy commands you can use to interact with emulator/device, through termina
 
   ```gradle
     dependencies {
-       compile(name:'nameOfYourAARFileWithoutExtension', ext:'aar')
-     }
-    repositories{
-          flatDir{
-                  dirs 'libs'
-           }
-     }
+       implementation(name:'nameOfYourAARFileWithoutExtension', ext:'aar')
+    }
+    repositories {
+       flatDir {
+          dirs 'libs'
+       }
+    }
   ```
 
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