docs(platform): update platform docs

ionic/platform/platform.ts

@@ -30,7 +30,9 @@ export class Platform {
 
   /**
    * @param {string} platformName
-   * @returns {bool}
+   * @returns {bool} returns true/false based on platform you place
+   * @description
+   * Depending on the platform name, isPlatform will return true or flase
    *
    * ```
    * import {Platform} 'ionic/ionic';
@@ -74,22 +76,25 @@ export class Platform {
     return this._platforms;
   }
 
+
   /**
-   * TODO
-   * @param {string} platformName
-   * @returns {object}
+   * @param {string} optional platformName
+   * @returns {object} An object with various platform info
+   * - `{object=} `cordova`
+   * - `{object=}` `platformOS` {str: "9.1", num: 9.1, major: 9, minor: 1}
+   * - `{object=} `deviceName` Returns the name of the device
+   * - `{object=}` `device platform` R
    * @description
-   * Returns an object containing the os version
+   * Returns an object conta
    *
    * ```
    * import {Platform} 'ionic/ionic';
    * export MyClass {
    *    constructor(platform: Platform){
    *      this.platform = platform;
-   *      console.log(this.platform.versions('android'));
-   *      // Returns an object with the os version as a string,
-   *      // The Major version as a string
-   *      // The Minor version as a string
+   *      console.log(this.platform.versions());
+   *      // or pass in a platform name
+   *      console.log(this.platform.versions('ios'));
    *    }
    * }
    * ```
@@ -106,7 +111,6 @@ export class Platform {
   }
 
   /**
-   * TODO
    * @returns {promise}
    * @description
    * Returns a promise when the platform is ready and native functionality can be called