README: update initial instruction.

Homebrew handles the prefixes automatically.
Update from Java6 to Java7

Fixes #2189
Updated to version 0.8.3
Isolator 4.9beta
Merge pull request #2219 from majksner/patch-1

Lightpaper 0.8.3
Version fix
Merge pull request #2223 from majksner/patch-2

Correct Lightpaper version number
Merge pull request #2222 from leoj3n/isolator-4.9beta

Isolator 4.9beta
Correct sha1 key
updated appcode to version 2.5.4
Fix SHA1 for IntelliJ IDEA 13.0.1 Build 133.331
Add cask for Opera Mobile Emulator
Merge pull request #2225 from wwojcik/intellij-unlimite

Intelij 13.0.1 unlimite correct sha1 key
Merge pull request #2226 from ahbeng/intellij-idea-ultimate

Fix SHA1 for IntelliJ IDEA 13.0.1 Build 133.331
Merge pull request #2214 from berinle/appcode

updated appcode to version 2.5.4
Merge pull request #2218 from kevinSuttle/opera-mobile

Add cask for Opera Mobile Emulator
Update Hex Color Picker path

Binary is located inside Hex Color Picker directory.
Adding dogecoin-qt.app.

Such Cask. So Awesome.
Merge pull request #2231 from jonathanchu/dogecoin

Adding dogecoin-qt.app.
Groovesquid