地図SDKは MapKit だけじゃない！OSMやBingが使える iOS用 Map SDK、route-me のセットアップ方法 ref: http://qiita.com/items/8f0d1e5b6d90bb93d883

file0.sh

git clone https://github.com/route-me/route-me.git

file1.sh

cp -rp samples/SampleMap/ ../your/awesome/mapproject

file2.sh

open your/awesome/mapproject/SampleMap.xcodeproj/

MapViewController.m

id myTilesource = [[[RMCloudMadeMapSource alloc] 
              initWithAccessKey:@"YOUR_API_KEY" styleNumber:999] autorelease];