Remove skipInstall

Install is now able to detect if the APK exists on device or not.
This removes the need for a skipInstall flag.

Fix #313
Improve activity not found error

Fix #319
Match overflow menu button and button
Add custom class name matches
Merge pull request #316 from bootstraponline/rm_skip_install

[Android] Remove skipInstall
Merge pull request #320 from bootstraponline/act_not_found

[Android] Improve activity not found error
Merge pull request #321 from bootstraponline/overflow_button

[Android] Match overflow menu button
Fix selectors with dots

Fix #318
Fix button finding

Fix #325
wrap executeAtom so it is aware of blocking alerts; some other rearch
Merge pull request #323 from bootstraponline/fix_dot

[Android] Fix selectors with dots
Merge pull request #326 from bootstraponline/fix_button

[Android] Fix button finding
Merge pull request #327 from jlipps/master

handle webview alerts somewhat
Find Element from element in webviews.
Merge pull request #328 from maudineormsby/master

Find Element from Element in webviews + test
enable getting of text in webview alert
allow dismissing of alerts that only have OK buttons
allow setting of alert text
make sure setAlertText fails on non-prompts
make sure you can't get text of a dismissed alert