New branch for minor fixed required for zGetPOP
added timeout to zGetText() function
updated zGetPOP() function
minor update to zGetPOP function
added method zCreatePOPSettings()

Helper function to quickly create settings file for POP data
minor fixes to docstring of zCreatePOPSettings
zCreatePOPSettings to zSetPOP..., modified zGetPOP

1. changed function name for setting POP analysis setting to
zSetPOPSettings() for consistency
2. added the ability to set Irradiance/Phase data settings to
zSetPOPSettings()
3. added logic to zGetPOP so that it can return both Phase and
Irradiance data
Completed POP data functions

Completed functions zGetPOP, zModifyPOPSettings and zSetPOPSettings,
along with a fiber coupling efficiency calculation example in
Example/Scripts and three unit-test functions
Merge pull request #30 from indranilsinharoy/fixPOPinfo

Updated all POP related functions, unit-tests and example