package.json: remove unnecessary `./node_modules/.bin` from `scripts.test`

`./node_modules/.bin` is automatically added to PATH when running npm commands,
so there's no need to explicitly mention it.
fixed header for chrome and safari
Merge pull request #75 from laggyluke/master

package.json: remove unnecessary `./node_modules/.bin` from `scripts.test`
Merge pull request #78 from pnispel/cross-browser-header-fixes

fixed header for chrome and safari