Reworked the two PNG tasks.
This will close
#163 Image Optimization Broken on Linux/Mac
#147 OptiPNG with unix
#141 You have optipng installed and your version is: usage: grep (Mac OS Lion Mountain)
#149 - fix optipng version regex
Reworked jpeg task workflow
Reworked image flow fixes most of #169
Updated with instructions for new image optimization
reworked image flow one more time
one small adjustment to an <and>
One last issue, I think.
finishing touches. Now to test and release.