Added basic channel subscription and feed pages (#620)

Added basic channel subscription and feed pages

- Room Persistence for sqlite support.
- RxJava2 for reactive async support.
- Stetho for database inspection support.
- Enabled Multidex for debug build.

app/build.gradle

@@ -18,6 +18,12 @@ android {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
+        debug {
+            multiDexEnabled true
+
+            debuggable true
+            applicationIdSuffix ".debug"
+        }
     }
 
     lintOptions {
@@ -58,4 +64,16 @@ dependencies {
     compile 'com.github.nirhart:parallaxscroll:1.0'
     compile 'com.nononsenseapps:filepicker:3.0.0'
     compile 'com.google.android.exoplayer:exoplayer:r2.4.2'
+
+    debugCompile 'com.facebook.stetho:stetho:1.5.0'
+    debugCompile 'com.facebook.stetho:stetho-urlconnection:1.5.0'
+    debugCompile 'com.android.support:multidex:1.0.1'
+
+    compile "android.arch.persistence.room:runtime:1.0.0-alpha8"
+    annotationProcessor "android.arch.persistence.room:compiler:1.0.0-alpha8"
+
+    compile "io.reactivex.rxjava2:rxjava:2.1.2"
+    compile "io.reactivex.rxjava2:rxandroid:2.0.1"
+    compile 'com.jakewharton.rxbinding2:rxbinding:2.0.0'
+    compile "android.arch.persistence.room:rxjava2:1.0.0-alpha8"
 }