Add device detection for Lenovo tablet

Lenovo tablet detection is missing. example userAgent: "Mozilla/5.0 (Linux; Android 4.0.3; IdeaTab A2107A-F Build/ IML74K) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Safari/535.19"
Add Nexus 5 to device list

User agent string taken from Chrome (Beta) Desktop's user-agent override in its
developer tools. Added to test plan.
Merge pull request #31 from dougli/master

Add Nexus 5 to device list
Merge pull request #30 from jackpoll/patch-1

Add device detection for Lenovo tablet
Increment build version