[request] make pysmell runnable in-place

[timbertson]

Right now it's almost possible to use the tagged .tgz without installing or manually moving anything. The only manual steps I had to do were:

• make a symlink at bin/pysmell linking to ../pysmell/tags.py, so that bin/ may be added to $PATH
• put pysmell.vim into a subfolder ending in "/plugin/pysmell.vim", so that the path may be appended to vim's runtimepath (using pathogen, for example)

If it's not too much effort, it would be great if this could be done to the source here, so that the tagged revisions downloadable from github could be used without manually having to do this stuff (or install anything).