Edited README to reflect compilation order some systems require
(ie, with libraries last); added trivial Makefile; added simple test image

Compilation tested on GCC 4.6.3 on Ubuntu 12.04
  cc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
  Linux x121e 3.2.0-27-generic-pae #43-Ubuntu SMP Fri Jul 6 15:06:05 UTC 2012 i686 i686 i386 GNU/Linux