add gitreview and gitignore

Change-Id: Id9993a293b7326ba40081a9fb23e2dffe94599fc
Tuleap: #313

.gitignore

+
+# Evil DS_Store
+.DS_Store
+
+# Dependency lib
+fat/
+DEPS/
+
+# Xcode UserData
+Ring/Ring.xcodeproj/project.xcworkspace/xcshareddata/
+Ring/Ring.xcodeproj/project.xcworkspace/xcuserdata/
+Ring/Ring.xcodeproj/xcuserdata/
+
+# Obj-C/Swift specific
+*.hmap
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+# CocoaPods
+Pods/
+

.gitreview

+[gerrit]
+host=gerrit-ring.savoirfairelinux.com
+port=29420
+project=ring-client-ios
+defaultremote=origin
+defaultbranch=master