Fix installation failure on case-sensitive file systems.

+ Convert folder name to lowercase to satisfy definition in setup.py.
Enable syntax highlighting for code snippets.
Changed requirements to allow newer version of requests.
Merge pull request #9 from johnjohndoe/bugfix/case-sensitive-file-system

Fix installation failure on case-sensitive file systems.
Merge pull request #10 from johnjohndoe/syntax-highlighting

Enable syntax highlighting for code snippets.
Merge pull request #12 from itiboi/bugfix/newer-request-version

Allow newer version of requests
Merge branch 'mvexel/master' into auto-import

Conflicts:
	Overpass/Overpass.py
	Overpass/__init__.py
	Overpass/api.py
	README.md
	overpass/Overpass.py