Move TaskHelper to Shared folder

src/Discord.Net.Commands/CommandBuilder.cs

@@ -61,11 +61,7 @@ namespace Discord.Commands
 		}
 		public CommandBuilder Do(Action<CommandEventArgs> func)
 		{
-#if DNXCORE50
-			_command.Handler = e => { func(e); return Task.CompletedTask; };
-#else
-			_command.Handler = e => { func(e); return Task.Delay(0); };
-#endif
+			_command.Handler = e => { func(e); return TaskHelper.CompletedTask; };
 			return this;
 		}
 	}

src/Discord.Net.Commands/project.json

@@ -5,6 +5,7 @@
 	"tags": [ "discord", "discordapp" ],
 	"projectUrl": "https://github.com/RogueException/Discord.Net",
 	"licenseUrl": "http://opensource.org/licenses/MIT",
+	"compile": ["**/*.cs", "../Discord.Net/Shared/*.cs"],
 	"repository": {
 		"type": "git",
 		"url": "git://github.com/RogueException/Discord.Net"