The Base64 additions consits of two parts
1.	The Base64 encoder and decoder, written in plain C99 (ITBase64.h, ITBase64.c).
2.	The NSData additions written in Objective-C, that uses functions from part 1 (ITBase64Additions.h, ITBase64Additions.m).
Usage:
If you only need the C99 encoder/decoder, include ITBase64.h in your source code and add ITBase64.h and ITBase64.c to your project.
A sample can be found in main.c
To use the NSData additions, import ITBase64Additions.h in you source code
and add ITBase64Addition.h, ITBase64Addition.c, ITBase64.h and ITBase64.c
to your project.