Add mobile find example for Java
el.tag_name on Android should return element's className.
Merge pull request #1851 from paymand/android_tag_name

el.tag_name on Android should return element's className.
Merge pull request #1848 from bootstraponline/mobile_find_java

Add mobile find example for Java
Update grid.md
Merge pull request #1852 from stephensjlee/patch-1

Update grid.md
Allow multiple ChromeDrivers to be running
Merge pull request #1856 from imurchie/isaac-chromedriver

Allow multiple ChromeDrivers to be running
Clear the sessionOverride when cleaning up session