Initial approach for fixing the uia-preferences lost writes and reads
Bump to 0.11.4.pre1
Only run 'write' validation in Xcode 6.1 + iOS 8.1

An incredibly ugly diff that does one thing:  detect Xcode 6.1
+ iOS 8.1 and branch to run special validation code.  Otherwise
do what we have always done; write the preferences plist.
Chain synchronize call to NSUserDefaults
Remove unnecessary whitespace
Replace #define with static constant

Matches the rest of the constants in the file.
Merge pull request #89 from calabash/stability-uia-timeout

WIP: Stability uia timeout/lost write/read - Do not merge