accept the lower SDK version in `app.deployment_target' on Yosemite
accept the lower SDK version in `app.deployment_target' on Yosemite

beni55/RubyMotion,jjaffeux/RubyMotion,HipByte/RubyMotion,hboon/RubyMotion,beni55/RubyMotion,beni55/RubyMotion,incbee/RubyMotion,katsuyoshi/RubyMotion,incbee/RubyMotion,katsuyoshi/RubyMotion,HipByte/RubyMotion,katsuyoshi/RubyMotion,beni55/RubyMotion,hboon/RubyMotion,jjaffeux/RubyMotion,incbee/RubyMotion,jjaffeux/RubyMotion,katsuyoshi/RubyMotion,hboon/RubyMotion,jjaffeux/RubyMotion,HipByte/RubyMotion,incbee/RubyMotion