Merge pull request #34 from mtola/master

v0.47.1 - fix a bug on Linux for COFF reading - add icons for texture
add travis script
update travis script
improve compilation with clang
update doc for Ubuntu 13.04 (The Raring Ringtail) --> need to activate qt4 by default with: sudo apt-get install qt4-default
update vmware doc
v0.47.3 : add save and restore mainwindow state - toolbar icons are now 16x16 instead of 24x24