Changed the way the app is sent to background: now brings up Home screen
instead of moving the activities task back.
Added BackgroundAppTest in selendroid-test-app.
Changed some spacing and created a specific method for finding current acitivity through adb.
adding workaround for Japanese character encodings
Merge pull request #461 from mmnormyle/master

Update on sending a.u.t. to background functionality
Update changelog.md
Merge pull request #463 from koichirok/japanese_encoding_workaround

adding workaround for Japanese character encodings