Fix spelling error and bump up log file size.
Revision bump.
Merge branch 'fix-logging'
Fix Travis build status branch.
Merge 4.x to master.
Fix heap profile config check.
Revision bump.
Merge branch develop into master
Merge branch 'develop'
Minor version bump.
README: Firefox: minimal version = 33

And 33 is the current Beta and not the current Nightly version
Conflicts:
	README.md
README: added details to generate self-signed cert

The goal is to show that the user has to regenerate a new key and a
new certificate when using `node-janus` in an external server.
Updated readme.
Delete GIF after transcode.