Merge pull request #367 from manosim/update-readme

Update README

Author: manosim

README.md

@@ -2,13 +2,13 @@
 
 > The mobile app has been depreacated in favor of the official GitHub mobile app the is coming out [soon](https://github.com/mobile).
 
-![Gitify](assets/images/press.jpg)
+![Gitify](assets/images/press.png)
 
 ### Download
 
 You can download Gitify for **free** from either the website [www.gitify.io](http://www.gitify.io/) or from the GitHub repository [releases](https://github.com/manosim/gitify/releases) page.
 
-You can also install Gitify via [Homebrew Cask](http://caskroom.io/)
+You can also install Gitify via [Homebrew Cask](http://brew.sh/)
 
 ```shell
 brew cask install gitify