title: How to develop with local podspec project
body: <p>ios noob here.
  I have a react-native app and I wrote a native module (private).</p>
  
  <p>now I want to use it.
  in my app's podfile I've defined the module to be taken from <code>node_modules</code>, but in the module's podspec file I need to define <code>source</code> so I've wrote : <code>s.source = {:path =&gt; "./ios"}</code>.</p>
  
  <p>Apparently this is not supported in cocoapods for a long time.
  this fails with <code>Unsupported download strategy '{:path=&gt;"./ios"}'.</code></p>
  
  <p>Any help for how can I make this work will be appreciated.
  Thanks</p>