Update project files

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Thu May 15 23:13:59 NZST 2014
+#Fri Feb 06 09:56:43 NZDT 2015
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.11-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.2.1-all.zip