add installation files through text editor, edits from pip1
add new subchs for installation, running prgrms
add installation subchs to toc
fix python install section headings
formatting edits in texteditor.rst
fix terminal references in pythoninstall
Merge pull request #80 from aerenchyma/add-install-ch

Add install ch
pip2 week 7 initial release
reverting ps6
ps6 with unix problems