README edits

See #6, release log:

• 2fb0b05 by @kniazkov: Merge pull request #6 from pol...
• 7bdf315 by @pollyvolk: Additions to README
• c55300f by @pollyvolk: Updated versions
• 179fc8e: More changes in README
• 1c575c0: Added example of division by z...
• 439de26: Merge branch 'master' of https...
• 4447743: Added examples
• c288d15: Added info about CLI options
• 35fec85: Updated versions
• ffebddd: Addings to README
• 1e9e024 by @kniazkov: Merge pull request #5 from kni...
• 45b5003 by @kniazkov: Updated astranaut & uast versi...
• 1db9f5f by @pollyvolk: Merge pull request #4 from pol...
• 32c3f4d: Changes for release
• 8fb196a by @kniazkov: Merge pull request #3 from uni...
• c6df6e6: Updated README and examples
• b81d968: Updated UAST version
• 3597c95: Deleted test that fails in lin...
• 7ba1828: Added tests and examples
• a7d1d7b: Renamed --parse option and add...
• and 12 more...

Released by Rultor 2.0-SNAPSHOT, see build log