Added a simple way to change directory for PC and Mac

Choose comp = 1 or comp = 0 based on mac or PC.  This should be easier
than using comments to change between computer types
Added comments and mac/PC changeability

Added comments and found another place where mac/PC can be toggled by
comp = 0 or comp = 1
Added more comments

Added comments about column numbers; deleted some empty lines
Debugging for mac

Added work-around to part 1 for importing .csv files (on my mac xlsread
does not work with .csv files)
I also added some comments.

Still need to finish debugging part 2 for mac.
Removed redundant code

since ‘num’ is created in both PC and mac methods, the means/SD are
calculated after the if statement about which type of computer is being
used.
Debugged Test_Environmental_Variable_Extraction_V1.m for mac

The script ‘Test_Environmental_Variable_Extraction_V1.m’ now can work
with mac computers.  xlswrite was not working with my mac, so I used
writeable as a work-around.

Ignore the new files—they were created from the test run of
Test_Environmental_Variable_Extraction_V1.m

Also fixed some spelling errors
Changed boundaries in ACC_Parametrization

boundaries for gm and Rd
Updated Read me files

Folders still need some organization, and read me files still need some
more detail.
Deleted output files from tests