Removed multiple declarations of method

method had two identical declarations: 'mappableObjectForData:'
Removed multiple declarations of method

Method 'requestAllSortedBy:ascending:withPredicate:inContext' was declared identically twice!
Removed multiple declarations of method

Method 'objectLoaderForObject:method:delegate:' was declared identically three times!
Merge pull request #889 from jakemaskiewicz/patch-1

Multiple Declarations Removed
Updates for RestKit master for iOS 6 arm7s build error and Xcode 4.5 build warnings. refs #930
Fix bug in route retrieval
Merge branch 'release/0.20.0-pre1'
Merge branch 'master' of github.com:RestKit/RestKit
Point Podspec to 0.20.0-pre1 tag
Merge branch 'hotfix/adjust-tag-on-podspec'
Merge branch 'release/0.20.0-pre2'
Bump Podspec to point at pre2 tag
Merge branch 'release/0.20.0-pre3'
Update tag to 0.20.0-pre3
Merge branch 'release/0.20.0-pre4'
Merge branch 'master' of github.com:RestKit/RestKit
Set tag to pre4 in Podspec
More explicit installation directions

Made explicit some instructions that required prior understanding of cocoapods in order to understand.
Merge pull request #1096 from wbarksdale/patch-1

More explicit installation directions
Add explicit configuration instructions for Core Data to the README.md. refs #1101