updated link for example module in template
/// For more guidance on Substrate modules, see the example module
-/// https://github.com/paritytech/substrate/blob/gav-template/srml/example/src/lib.rs
+/// https://github.com/paritytech/substrate/blob/master/srml/example/src/lib.rs
use support::{decl_module, decl_storage, decl_event, StorageValue, dispatch::Result};
use system::ensure_signed;
