Updated README.md

Added project definition, overview, picture, features and links.
Merge pull request #2 from Bezuhlyi/master

war building fixed
Merge pull request #1 from dmrachko/patch-1

Updated README.md
added ignoring eclipse settings
refactored in order to support multiple subprojects
fixed bug
fixed jar-with-dependencies
ignored test temporary
MSKCENTRAL-1 Integrate openTSDB
MSKCENTRAL-1 Integrate openTSDB
Text made shorter, new sections and more links
HTTP Basic Authentication support added. Appropriate unit tests added and updated.