Merge branch 'hotfix/remove_constraint_layout'

Author: NeoLSN

app/build.gradle

@@ -23,7 +23,6 @@ dependencies {
     compile project(path: ':library')
     compile fileTree(dir: 'libs', include: ['*.jar'])
     compile 'com.android.support:appcompat-v7:23.4.0'
-    compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha3'
     testCompile 'junit:junit:4.12'
     androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
     androidTestCompile 'com.android.support.test:runner:0.5'

app/src/main/res/layout/activity_main.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout
+<LinearLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/activity_main"
@@ -12,4 +12,4 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"/>
 
-</android.support.constraint.ConstraintLayout>
+</LinearLayout>