Retire Snowflake from 2010 and update README
[split] add config for travis open source ci
hard to call it alpha/experimental after serving billions of ids
Merge branch 'master' of github.com:twitter/snowflake
add note about contributing
Add a note about running ntpd such that it won't move time backwards.
protect against NTP (or whomever) jumping the clock backwards
Add verb (grammar error in README).
add citations for k-sort
update readme for open sourcing