Added custom XML location (might not be working yet)
Merge branch 'master' of https://github.com/puregame/ModpackInstaller into puregame-master

Conflicts:
	src/Gui.java
	src/ReadXML.java
Merge pull request #6 from puregame/master

Downloads selective mods
Changes to selective mods, changed structure and added code to handle reordered mods