Fixed the project structure.

Added dependencies packages inside 'deps' folder:
* nitrogen (contains erlang R16B02 and yaws 1.96)
* bootstrap
* rebar

Added Makefiles for 'engine', 'website' and the root directory.
Compiling:
* From the root directory type: make OR make compile_engine OR make
compile_website

Running
* From the root directory type: make run_engine OR make run_website
I will add a 'make run' to be able to run both the engine and the
website, but I have to check some things first.

Cleaning
* From the root director type: make clean OR make clean_engine OR make
clean_website OR make clean_deps ('make clean' will clean all of the
other ones)

To do:
* Fix running of both website and engine
* Fix so that the website code can be put inside 'website' folder
instead of 'deps/nitrogen/site' folder (so to try things out for now,
you need to put code and such in there)
* Make installation easier and more straightforward.
* Other issues?
Merge branch 'develop' of github.com:projectcs13/sensor-cloud into develop