chore(.meta files): Added top level meta files to the gitignore

Author: mediumTaj

.gitignore

@@ -78,3 +78,20 @@ Docs/publishing-release.md.meta
 /Scripts/Editor/Help/
 /Scripts/Editor/Help.meta
 */MRefBuilder.config.meta
+Travis.meta
+Widgets.meta
+ThirdParty.meta
+README.md.meta
+Plugins.meta
+BaseService.cs.meta
+CallbackDelegates.cs.meta
+Connection.meta
+Debug.meta
+IBM.Cloud.SDK.asmdef.meta
+IBMError.cs.meta
+IBMResponse.cs.meta
+IBMService.cs.meta
+Logging.meta
+RequestObject.cs.meta
+Tests.meta
+Utilities.meta