lein-release plugin: preparing 0.3.5 release
lein-release plugin: bumped version from 0.3.5 to 0.3.6-SNAPSHOT for next development cycle
(PE-2650) update README.md

This commit adds descriptions of the fucntions recently added to the
WebserverService protocol to the README.md file.
Merge pull request #13 from mruzicka/PE-2650_doc_update

(PE-2650) update README.md