Merge pull request #21 from ThyArmageddon/master

virtualenv rst fixes
Adds link to the rtfd site in README.
Merge branch 'master' of github.com:kushaldas/pym
Fixing couple of typos in the first chapter.
Merge pull request #23 from pradeepto/master

Simple typo fixes. :)
PEP8 guidelines taken from http://hg.python.org/peps/file/4e64c651ec3f/pep-0008.txt
Merge branch 'master' of github.com:kushaldas/pym
Fixing more typos. s/Clousers/Closures.
Merge pull request #24 from pradeepto/master

Fix more typos as I read this awesome book.
More s/Clousers/Closures.
Removing extra \ from docbook to rst convert.
Merge branch 'master' of github.com:kushaldas/pym
Merge pull request #25 from pradeepto/master

More simple typos.
Typo fixes