Update plugin naming to convention

plugin.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <plugin xmlns="http://apache.org/cordova/ns/plugins/1.0"
-    id="com.shazron.cordova.plugin.keychainutil"
-    version="2.0.0">
+    id="cordova-plugin-ios-keychain"
+    version="3.0.0">
 
     <name>KeyChain Plugin for Cordova iOS</name>
     <description>This plugin allows your app access to the iOS KeyChain from Cordova. See: https://developer.apple.com/library/mac/documentation/security/conceptual/keychainServConcepts/iPhoneTasks/iPhoneTasks.html</description>