explain better how to install dependencies
Added SFGUI and Boost as dependencies, as well as updated the missing files and an install procedure.
Merge pull request #36 from stefanhendriks/update-readme-for-installing-dependencies

explain better how to install dependencies
Merge pull request #37 from eXpl0it3r/master

Added SFGUI and Boost as dependencies, ...
small fps boost
merged from master
added Entity files