added phpStorm integration info
corrected text
set filename correctly, if simpspector.yml is missing
don't show file content lines if there is now file content
added composer.json hint
added link to local webserver which opens the correpsonding file in phpStorm
used ajax request instead to prevent browser from opening a new window
Merge pull request #31 from simplethings/feature/phpstorm-integration

added phpStorm integration info
add phpmd gadget
fix phpmd config