some fixes to ocamlfind installation, additions to instructions, and uninstallation targets
added get_pixels
added api reference
Merge pull request #2 from piotrm0/master

some fixes to ocamlfind installation, additions to instructions, and uni...
Merge pull request #3 from codename68/master

Added events structures for SDL_TextInputEvent and SDL_TextEditingEvent
report the contributors in the "AUTHORS" file
split the modules requiring bigarrays

in order to have different kind of buffer management
(appropriate for several possible use cases.)
use the variable $(MAKE) for recursive calls of make

see section 5.7 of its manual (edition 0.72, make version 4.0):

http://www.gnu.org/software/make/manual/make.txt
the translation table "sdl_init_table" is not used anymore
moved "Sdl.Surface.get_pixels" into "sdl2.ba"
added "Surface.get_pixels" to access raw pixels with a "string" type
"Surface.get_pixels" with BA. was moved into "Surface_ba.get_pixels"
removed devel helper scripts
untrack the generated interfaces and api-doc
example using the prefixless style
make sdl rectangles from tuples of 4 integers
convenience rectangle creation with different arity
added blitting convenience for surfaces
convenience for moving rectangles
Text input example