Revert back to SDK 20, but use plugin 14.0

Allows Android Studio (needs plugin 14) and Travis (20) to hopefully play nice

app/build.gradle

@@ -17,12 +17,6 @@ android {
         versionCode 1
         versionName '1.0'
     }
-    buildTypes {
-        release {
-            runProguard false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-        }
-    }
     packagingOptions {
         exclude 'META-INF/LICENSE.txt'
         exclude 'META-INF/NOTICE.txt'

build.gradle

@@ -7,7 +7,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.13.+'
+        classpath 'com.android.tools.build:gradle:0.14.4'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Nov 17 21:43:00 EST 2014
+#Mon Nov 24 00:24:09 EST 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.2-all.zip