check system memory and set cores to use based on return

version update

roxygen2 update removed empty line at bottom of manuals

added ability to process new collection 1 sr imagery

adding file

version advance

Merge pull request #4 from jdbcode/develop

Develop

version change

changed some print statements to cat statements

got rid of redundant image processing, which speeds up completion tim…

…e, and it was re-organized to be more flexible to future changes in allowing different time periods to be composited