Update version number for release 0.3.1

Author: puf

library/build.gradle

@@ -9,7 +9,7 @@ android {
         minSdkVersion 16
         targetSdkVersion 22
         versionCode 1
-        versionName "0.3.0"
+        versionName "0.3.1"
     }
     buildTypes {
         release {

library/pom.xml

@@ -6,7 +6,7 @@
   <name>FirebaseUI-Android</name>
   <description>FirebaseUI library for Android applications</description>
   <url>https://github.com/firebase/FirebaseUI-Android</url>
-  <version>0.3.0</version>
+  <version>0.3.1</version>
   <packaging>aar</packaging>
   <scm>
     <url>scm:[email protected]/firebase/FirebaseUI-Android</url>