v0.7.0 Big File Support.

Merge pull request #21 from Volograms/fix/drag-1024

fix to 1024 texture files not working with drag-and-drop

bump to include readme etc

0.5.0 - bumping version for drag-and-drop feature release

v0.4.2 drag-and-drop

version bump

tweak text was too large in Readme