Fixing serialization of boolean bug. Updating source code with new guides of Xcode 5.1. Migrating to XCTest unit testing
Fixing travis SSL v2 or v3 problem
Enabled more new warnings in Xcode
Updating libObjCAttr pod. Speeding web service tests
Merge remote-tracking branch 'epam/master' into HEAD
Fixing testing on travis-ci
Merge remote-tracking branch 'origin/Xcode_51_Warnings' into Double_Call_On_WS_Cancel
Merge pull request #282 from yuru-taustahuzau/Xcode_51_Warnings

Merge in warnings cleanup & tests improvements fixes.
Fixing double invokation of failure block after cancel. #280
Refactoring ws error methods
Adding encoding and allowedCharset option to URLBuilder attribute. #281
Fixing double invokation of failure block after cancel. #280
Merge pull request #283 from yuru-taustahuzau/Double_Call_On_WS_Cancel

Double call on canceling web call
Merging epam/dev branch back
Merge pull request #284 from yuru-taustahuzau/Allowed_CharSet

Allowed charsets and misc bugfixing.
Merge remote-tracking branch 'epam/dev' into dev