updated readme [ci skip]
typo fix
README syntax highlighting

use syntax highlighting, would you?
Update debugbar.js

https://github.com/maximebf/php-debugbar/issues/14
fixes #16
fixed issue #20 with proper coding style
typo
Update README.md
Update bridge_collectors.md
in variableListWidget, check if v variable is not null
Recursively format vars

Not sure if the name/implementation is the best, but with the old formatVars, an array with objects wasn't properly transformed.
This could lead to recursion and a blank screen..
This way every array is checked again for object, not just the first level.
Set color to black

When the site has a white text-color, the text cannot be read. Set to black by default.
fixed use of Object.keys() when not defined (fixed #25)
added support for sending data through HTTP headers (fixed #18)