add local.properties template

.gitignore

@@ -10,6 +10,6 @@ build/
 out/
 
 secret.gradle
-local.properties
+# local.properties
 
 publishing.sh

local.properties

@@ -0,0 +1,7 @@
+## This file must *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+sdk.dir=