allow to use `provisioning_profile' property in extension's Rakefile
allow to use `provisioning_profile' property in extension's Rakefile

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