Usage text and travis build fixes

[tormodvolden]

Please get the new zip file into place before merging this!
To merge this into your own repo, add this as a new remote and merge my commits:

git remote add tormod https://github.com/tormodvolden/kst.git
git fetch tormod winbuild
git merge 3eb2c4f 9a1d310

(merging this last commit will give you a nice fast-forward merge instead of the "github" merge crap.)

[tormodvolden]

Some of these fixes got into the repo (not applied patch for patch for some reason) but some is still outstanding. I can go through it and rebase it.