Howto fixes
 fixing typo and updating pixman package link
Pixman fix
Merge pull request #3 from Blopeur/dev

 fixing typo and updating pixman package link
 added how to for test and pocs based on the readme in Libheca
Merge pull request #4 from Blopeur/dev

 added how to for test and pocs based on the readme in Libheca
Merge pull request #6 from markkemel/dev

Howto fixes - typos, instructions, memory size parsing update