Update README.cleanup and mention flake8

README.cleanup

-Some cleanup commands :
+Some cleanup commands:
 
-To add a space after each comma :
-sed -e "s/\(\w\),\(\w\)/\1, \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\w\),\(\"\)/\1, \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\"\),\(\w\)/\1, \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\"\),\(\"\)/\1, \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\([)}\]]\),\(\w\)/\1, \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\([)}\]]\),\([\[{(]\)/\1, \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\w\),\([\[{(]\)/\1, \2/g" -i *.py printrun/*.py printrun/svg/*.py
+To add a space after each comma:
+sed -e "s/\(\w\),\(\w\)/\1, \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\w\),\(\"\)/\1, \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\"\),\(\w\)/\1, \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\"\),\(\"\)/\1, \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\([)}\]]\),\(\w\)/\1, \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\([)}\]]\),\([\[{(]\)/\1, \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\w\),\([\[{(]\)/\1, \2/g" -i *.py printrun/*.py printrun/*/*.py
 
-To add spaces around each = :
-sed -e "s/\(\w\)=\(\w\)/\1 = \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\w\)=\(\"\)/\1 = \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\w\)=\((\)/\1 = \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\w\)=\((\)/\1 = \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\w\)=\([\[{(]\)/\1 = \2/g" -i *.py printrun/*.py printrun/svg/*.py
+To add spaces around each =:
+sed -e "s/\(\w\)=\(\w\)/\1 = \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\w\)=\(\"\)/\1 = \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\w\)=\((\)/\1 = \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\w\)=\((\)/\1 = \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\w\)=\([\[{(]\)/\1 = \2/g" -i *.py printrun/*.py printrun/*/*.py
 
-To add spaces around each == :
-sed -e "s/\(\w\)==\(\w\)/\1 == \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\w\)==\(\"\)/\1 == \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\(\w\)==\((\)/\1 == \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\()\)==\(\w\)/\1 == \2/g" -i *.py printrun/*.py printrun/svg/*.py
-sed -e "s/\()\)==\((\)/\1 == \2/g" -i *.py printrun/*.py printrun/svg/*.py
+To add spaces around each ==:
+sed -e "s/\(\w\)==\(\w\)/\1 == \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\w\)==\(\"\)/\1 == \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\(\w\)==\((\)/\1 == \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\()\)==\(\w\)/\1 == \2/g" -i *.py printrun/*.py printrun/*/*.py
+sed -e "s/\()\)==\((\)/\1 == \2/g" -i *.py printrun/*.py printrun/*/*.py
 
 Obviously this is not a perfect solution, it WILL break the code. Juste check the diff and fix what's wrong before commiting.
+
+Flake8 checking:
+Flake8 can be used to check the coding style of the project.
+The current source code (as of July 23rd 2013) has been checked using the following command:
+    flake8 . --statistics --count --ignore=E251,E701,E302,E501 --exclude=.svn,CVS,.bzr,.hg,.git,__pycache__,prontserve.py,./printrun/server,projectlayer.py,./printrun/cairosvg
+This call ignores 4 kind of errors (E501: line being greater than 80 chars,
+E701: multiple statements on one line (usually this is if ...: ...), E302:
+wrong number of blank lines between functions, E251: unexpected spaces around
+keywoard/parameter equals), the rest of the errors and warnings should be
+killed as much as possible. Long lines should be avoided too.