Updated README (changed accents)
Merge branch 'experimental'

Conflicts:
	README
Created CHANGELOG
Renamed README to markdown file
Updated the compiling procedure
Added some copyright notices from other included softwares
Small accentuation fix
Put the copyright contributions in a preformatted area
Added source repo + API doc links to README file
Doxygen reference manual
Replaced greek letters in UTF-8 by latex commands in doxygen comments
Ignore doxygen-generated latex folder
Some more fixes relative to changes in error.h
Fixed some warnings in ParallelNode
Fixed some int vs unsigned int comparison warnings in B-Tree