Use "path" instead of "pattern" in the routing definitions

The docs (http://symfony.com/doc/current/book/routing.html) mention `path` as being the new option.
merged branch apfelbox/patch-1 (PR #227)

This PR was merged into the master branch.

Discussion
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Use "path" instead of "pattern" in the routing definition generation

The docs (http://symfony.com/doc/current/book/routing.html) mention `path` as being the new option.

Commits
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87f683f Use "path" instead of "pattern" in the routing definitions