created crossbow.clients module

created http client in crossbow.clients
copyright header
added pydoc to http.py
return response data from send()
install crossbow.clients from setup.py
tweaked example 1

removed nonsensical comment
commented out printing of "pretty_string"
merged changes to setup.py from master into httpclient branch
merged rename of crossbow to bowcaster

merged from master branch to httpclient branch
moved http client code from crossbow to bowcaster
install bowcaster.clients in setup.py
Merge branch 'httpclient'

Conflicts:
	setup.py