updated README to match master
edited comments
removed database_constructor and added struct database_t
memory allocated and freed correctly; using double rather than Pixel
removed the commented C++ lines from Recognition.c
fixed Makefile, created and implemented matrix constructor/destructor, created grayscale.h, tweaked header files; no segfaults, some leaks
rewrote Makefile yet again; added include ppm.h in grayscale.h; example and matrix_unit pass with no errors or leaks
Merge pull request #8 from taetcheson/tay_devel

Tay devel