removed checks related to udid and avd and added a check for udid only for ios.
Merge pull request #1010 from snevesbarros/adb_fix_error

Changes to allow installApp, removeApp and isAppInstalled to be called without providing a device id
Update troubleshooting.md

https://github.com/appium/appium/issues/1011
update selendroid to track dev branch instead of master
Optimized looking at progress indicators and fixed a looping error.  Also added a configurable timeout parameter.
Merge pull request #1012 from mutualmobile/master

Optimized waitForPageLoad and added timeout
Appium now reponds to the last command it received when Instruments exits thus it no longer leaves the selenium driver hanging.
TestApp dies when sent to background.  Test added for appium responding to last command when instruments is killed.
Merge pull request #1015 from kinghenry3/timeoutfix

Appium now responds to the last command it received when instruments exits.
add test and fix for isAppInstalled, updated selendroid test app location
Merge pull request #1018 from jlipps/master

fix isAppInstalled
Dynamic strategy now benifits from the classmap aliases.
Merge pull request #1020 from mutualmobile/master

Dynamic strategy now benifits from the classmap aliases.
mobile: localScreenshot
Merge pull request #1016 from bootstraponline/mobile_proxy

mobile: localScreenshot
fixed issue around installation where app was downloaded and unzipped twice for the installApp mobile command.
Fix "Cannot read property of null/undefined".
Merge pull request #1026 from TadeasKriz/fix/undefined-this

Fix "Cannot read property of null/undefined".
Added longer timeout for http_client

To compensate for slower boot time of Android VMs and for network issues, wait longer before timing out (but only at startup).
Added fix to remove app/apk files from zipPath before appium starts to unzip them. If this is *.app located in Payload folder then folder is being removed too. Fix is done because fruitstrap sometimes failes to install app file on the device when /var/folders/... are not cleared correctly.