Added demo module to show explicit imports of macros (#1770)

* added demo module to node template

* updated comments

* replaced demo with updated template module

* Personal preferences here

* fixed comment inside macro

substrate/node-template/runtime/src/lib.rs

@@ -46,6 +46,9 @@ pub type BlockNumber = u64;
 /// Index of an account's extrinsic in the chain.
 pub type Nonce = u64;
 
+/// Used for the module template in `./template.rs`
+mod template;
+
 /// Opaque types. These are used by the CLI to instantiate machinery that don't need to know
 /// the specifics of the runtime. They can then be made to be agnostic over specific formats
 /// of data like extrinsics, allowing for them to continue syncing the network through upgrades
@@ -167,6 +170,11 @@ impl sudo::Trait for Runtime {
 	type Proposal = Call;
 }
 
+/// Used for the module template in `./template.rs`
+impl template::Trait for Runtime { 
+	type Event = Event;
+}
+
 construct_runtime!(
 	pub enum Runtime with Log(InternalLog: DigestItem<Hash, Ed25519AuthorityId>) where
 		Block = Block,
@@ -180,6 +188,8 @@ construct_runtime!(
 		Indices: indices,
 		Balances: balances,
 		Sudo: sudo,
+		// Used for the module template in `./template.rs`
+		TemplateModule: template::{Module, Call, Storage, Event<T>},
 	}
 );