Reverted commits for spec causing error

This reverts the pull request [#8397](https://github.com/CocoaPods/Specs/pull/8397) and the commit for the [attempted fix](https://github.com/CocoaPods/Specs/commit/0ab929744afb2cee01850ee8d8895abd4a82afa0).

The socket.IO spec (v0.5.0) was still causing the builds to fail https://travis-ci.org/CocoaPods/Specs/builds/19403446
```
socket.IO/0.5/socket.IO.podspec [Full]
-> socket.IO (0.5.0)
- WARN | The version should be included in the Git tag.
- NOTE | [xcodebuild] SocketRocket/SocketRocket/SRWebSocket.m:923:55: warning: implicit conversion loses integer precision: 'uint64_t' (aka 'unsigned long long') to 'size_t' (aka 'unsigned long') [-Wshorten-64-to-32]
-> The spec cannot be accepted.

```