Ignore useless files

.gitignore

@@ -0,0 +1,12 @@
+.gradle/5.1.1/executionHistory/executionHistory.bin
+.gradle/5.1.1/executionHistory/executionHistory.lock
+.gradle/5.1.1/fileHashes/fileHashes.bin
+.gradle/5.1.1/fileHashes/fileHashes.lock
+.gradle/5.1.1/fileHashes/resourceHashesCache.bin
+.gradle/5.1.1/javaCompile/classAnalysis.bin
+.gradle/5.1.1/javaCompile/jarAnalysis.bin
+.gradle/5.1.1/javaCompile/javaCompile.lock
+.gradle/5.1.1/javaCompile/taskHistory.bin
+.gradle/buildOutputCleanup/buildOutputCleanup.lock
+app/app.iml
+app/build.gradle