New OnceUx Test Class CompanionAdTestCase.java
##Rationale
Now that Companion Ads have been implemented into the Sample App, It's time for tests.
##Changed Files
**CompanionAdTestCase.java**
* New utility methods
    * *companionCheck* finds the companion ad based on the commpanion ad frame's resource id
    * *toCompanionAdCheck(int msec)* navigates to the next ad break, then performs *companionCheck*. It returns the results of *companionCheck*.
    * *toEndOfAdBreak* navigates to the end of an ad break, hides the seek controls, and then performs *companionCheck*. It returns the results of *companionCheck*.
* New tests
    * **testCompanionAd** navigates through the video using *toCompanionAdCheck* and *toEndOfAdBreak*. After the start of each ad break, it asserts that the companion ad is present.
    * **testCompanionAdLink** clicks on a companion ad and tests for the presence of the browser url the click is meant to link to
    * **testCompanionAdVanish** navigates through the video using *toCompanionAdCheck* and *toEndOfAdBreak*, checking after the end of each ad break for the presence of a companion ad. It asserts that *toEndOfAdBreak* will return false for each ad break.
Making Some Changes to CompanionAdTestCase.java
##Rationale

##Changed Files
**OnceUxUiAutomatorBase.java**
* added constants
    * one int constant for timeouts to each ad break
    * one string constant to identify each ad break
      * int *msecToPreroll* = 5000
      * int *msecToMidroll* = 35000
      * int *msecToPostroll* = 112000
      * int *msecAdBreakLength* = 30000

**CompanionAdTestCase.java**
* added Class Constants section label
* implementing the use of the new superclass constants
  * methods now require string identifiers as parameters
  * updating javadocs to include the new parameters
* Renaming methods/objects
  * renamed adText to adTextUiObject to remove the idea that it might be a string.
  * renamed *toEndOfAdCheck* to **waitForEndOfAdCheck** to better describe what it is doing
  * renamed *toCompanionAdCheck* to **waitForCompanionAdCheck** to better describe what it is doing
String should be uppercase.
Merge pull request #62 from BrightcoveOS/onceux-companionad-uitest

Merging.