Update setup.py

I added two modification to setup.py which allowed me to build carma_pack: 
"include" in the include_dirs - missing the one in src directory 
and modification to Armadillo lib pointer. 
I can build it on Linux CentOS6 now (with the system installed BOOST and Armadillo)
Create Linux_install.txt

These are my notes from the compile/install process on Linux.
Update Linux_install.txt
Merge branch 'pr/1'

Conflicts:
	src/setup.py
Fixed library_dirs after merging Aneta's changes