Master refactor

[njones]

Refactored, added tests and libized the code.

• Refactored the code, to use the bufio.Scanner instead of the getLine() user function.
• Refactored the helper functions to use simpler mechanics.
• Added tests for all of the helper functions (with the exception of the Field() function.)
• Separated the code so that it could be used as a library if needed. For example this is good for parsing the files to be included as a root cert pool.
• Added optional -quiet flag, to suppress output if just writing the parsed the NSS file to separate files.