Gradle wrapper should not be excluded from source files.

It is needed by other users to setup a dev envoriment

.gitignore

@@ -3,7 +3,6 @@
 .settings/
 build/
 eclipse/
-gradle/
 .classpath
 .nb-gradle-properties
 .project
@@ -13,4 +12,4 @@ run/
 *.ipr
 *.iws
 .idea/
-out/
+out/

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Mon Sep 14 12:28:28 PDT 2015
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.7-bin.zip