Added missing files to ignore

.checkstyle

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<fileset-config file-format-version="1.2.0" simple-config="true" sync-formatter="false">
+  <fileset name="all" enabled="true" check-config-name="Google Checks" local="false">
+    <file-match-pattern match-pattern="." include-pattern="true"/>
+  </fileset>
+</fileset-config>

.gitignore

@@ -1,5 +1,13 @@
 .DS_Store
 .gradle/
 .idea/
+
+# Intellij
+bin/
 build/
 out/
+
+# Eclipse
+.classpath
+.project
+.settings/