Check return values from load() separately so we can report parse errors. Call pcall no more than once to avoid triggering side effects twice.
Expanding docs; closes #87.
Turning REPL into its own module.
Updating docs.
Merge pull request #97 from Habbie/replerrors

Check return values from load() separately so we can report parse errors...
Fixing accidental global from #97.
Adding travis.
Fixing travis.
Updating docs.
Hopefully fixing Travis.
Adding travis sticker.
Travis IRC.
Updating travis IRC template.
While in beta, an update is available when there is a non-beta.
Releasing beta 4.
Adding principles to README.
Adding some basic screenshots.
Fixing screenshots.
Updating screenshot.
Prettifying screenshot subsection.