title: Why is my CocoaPod not downloading the source from the specified URL?
body: <p>I have a zipped up iOS framework which I am trying to use via CocoaPods in a test application. I have added it in my github under releases. My podspec currently looks like : </p>
  
  <pre><code>Pod::Spec.new do |spec|
    spec.name             = "TestPod"
    spec.version          = "0.1"
    spec.license          = { :type =&gt; "MIT", :file =&gt; "LICENSE" }
    spec.homepage         = 'http://www.test.com'
    spec.author           = "test"
    spec.summary          = "test."
    spec.source           = { :http =&gt; "https://github.com/username/TestPod/releases/download/0.1/TestPod-0.1.zip"}
    spec.vendored_framework     = "TestPod-0.1/TestPod.framework"
    spec.ios.deployment_target = '8.0'
  end
  </code></pre>
  
  <p>I'm using this directly in my Podfile with - </p>
  
  <pre><code>target 'TestApp' do
    pod 'TestPod', :git =&gt; 'https://github.com/username/TestPod/'
  end
  </code></pre>
  
  <p>However, on doing a <code>pod install</code>, I found that the Zipped file <code>TestPod-0.1.zip</code> was neither downloaded nor was the framework added to my project. Can someone please advise me as to how I can get the Pod to download my framework?</p>