added refresh button on preview pane (issue32
Merge pull request #47 from ikbenben/master

updated package.json for new push to extension manager
Merge pull request #48 from ikbenben/tidy-up

added refresh button on preview pane (issue32)
adding fix for refresh so media queries are reloaded
Merge pull request #49 from ikbenben/issue32.1

adding fix for refresh so media queries are reloaded
updating version of package