docs(): changed old cli commands (#1644)

Im also removed some V2 tags from Ionic and Angular

.github/CONTRIBUTING.md

@@ -4,7 +4,7 @@
 #### There are no rules, but here are a few things to consider:
 ###### Before you submit an issue:
 * Do a quick search to see if there are similar issues
-* Make sure that you are waiting for `deviceready` to fire before interacting with any plugin. If you are using Ionic 2, this can be done using [the `Platform.ready()` function](http://ionicframework.com/docs/api/platform/Platform/#ready).
+* Make sure that you are waiting for `deviceready` to fire before interacting with any plugin. If you are using Ionic, this can be done using [the `Platform.ready()` function](http://ionicframework.com/docs/api/platform/Platform/#ready).
 * **Check that you are using the latest version of** `ionic-native`, you can install the latest version by running `npm i --save @ionic-native/core@latest`
 
 ###### Still having problems? submit an issue with the following details:

src/@ionic-native/core/util.ts

@@ -25,7 +25,7 @@ export const getPromise = (callback: Function): Promise<any> => {
         callback(resolve, reject);
       });
     } else {
-      console.error('No Promise support or polyfill found. To enable Ionic Native support, please add the es6-promise polyfill before this script, or run with a library like Angular 2 or on a recent browser.');
+      console.error('No Promise support or polyfill found. To enable Ionic Native support, please add the es6-promise polyfill before this script, or run with a library like Angular or on a recent browser.');
     }
   };
 

src/@ionic-native/plugins/deeplinks/index.ts

@@ -49,7 +49,7 @@ export interface DeeplinkMatch {
  *    });
  * ```
  *
- * Alternatively, if you're using Ionic 2, there's a convenience method that takes a reference to a `NavController` and handles
+ * Alternatively, if you're using Ionic, there's a convenience method that takes a reference to a `NavController` and handles
  * the actual navigation for you:
  *
  * ```typescript
@@ -67,7 +67,7 @@ export interface DeeplinkMatch {
  *   });
  * ```
  *
- * See the [Ionic 2 Deeplinks Demo](https://github.com/ionic-team/ionic2-deeplinks-demo/blob/master/app/app.ts) for an example of how to
+ * See the [Ionic Deeplinks Demo](https://github.com/ionic-team/ionic2-deeplinks-demo/blob/master/app/app.ts) for an example of how to
  * retrieve the `NavController` reference at runtime.
  *
  * @interfaces
@@ -103,7 +103,7 @@ export class Deeplinks extends IonicNativePlugin {
   /**
    *
    * This is a convenience version of `route` that takes a reference to a NavController
-   * from Ionic 2, or a custom class that conforms to this protocol:
+   * from Ionic, or a custom class that conforms to this protocol:
    *
    * NavController.push = function(View, Params){}
    *

src/@ionic-native/plugins/facebook/index.ts

@@ -43,7 +43,7 @@ export interface FacebookLoginResponse {
  * Then type in the following command in your Terminal, where APP_ID and APP_NAME are the values from the Facebook Developer portal.
  *
  * ```bash
- *  ionic plugin add cordova-plugin-facebook4 --variable APP_ID="123456789" --variable APP_NAME="myApplication"
+ *  ionic cordova plugin add cordova-plugin-facebook4 --variable APP_ID="123456789" --variable APP_NAME="myApplication"
  * ```
  *
  * After, you'll need to add the native platforms you'll be using to your app in the Facebook Developer portal under your app's Settings:

src/@ionic-native/plugins/image-resizer/index.ts

@@ -43,7 +43,7 @@ export interface ImageResizerOptions {
  * Cordova Plugin For Image Resize
  *
  * Requires plugin `info.protonet.imageresizer` - use the Ionic CLI and type in the following command:
- * `ionic plugin add https://github.com/protonet/cordova-plugin-image-resizer.git`
+ * `ionic cordova plugin add https://github.com/protonet/cordova-plugin-image-resizer.git`
  *
  * For more info, please see the https://github.com/protonet/cordova-plugin-image-resizer
  *