libdynarr documentation is added

after the very recent release of version 0.0.3 which is considered stable, now the documentation is added to the dynarr project. the usage of libdynarr library is now quite simple.
just follow the instructions or the sample code and all of your worries of static and non-efficient arrays are over. no mem-leaking with libdynarr, and a easy and efficient way to help your programming life, be a programmer, be lazy and use someone elses library, for free...