Lint Fail for Cocoapods
<p>I have an Objective-C Library and I am trying to update the podspec to cocoapods. When I do the "pod spec lint" command I get the following error:</p>

<pre><code>[!] The spec did not pass validation, due to 1 error.
[!] The validator for Swift projects uses Swift 3.0 by default, if you are using a different version of swift you can use a `.swift-version` file to set the version for your Pod. For example to use Swift 2.3, run: 
    `echo "2.3" &gt; .swift-version`.
</code></pre>

<p>Here is my podspec file:</p>

<pre><code>Pod::Spec.new do |s|

  s.name         = "OSwitch"
  s.version      = "0.2.0"
  s.license      = { :type =&gt; "MIT", :file =&gt; "LICENSE" }
  s.summary      = "OSwitch is a customisable switch control writen in Objective C."
  s.homepage     = 'https://github.com/OyaSaid/OSwitch'
  s.source           = { :git =&gt; 'https://github.com/OyaSaid/OSwitch.git', :tag =&gt; s.version.to_s }
  s.platform     = :ios, "7.0"
  s.ios.frameworks = ['UIKit', 'Foundation']
  s.source_files = 'OSwitch/Classes/**/*.{h,m}'
  s.requires_arc = true
end
</code></pre>

<p>Why does this show when I have an objective C library. And how do I fix this?</p>

<p>Thanks</p>