Simple server setup.
Working remote update blocks.
Document update-blocks.
Require client auth for update-blocks server.
Merge branch 'master' into upnode

Conflicts:
	update-blocks.js
Rename function and take user instead of uid.
Fix reconnects to update-blocks.
In update-blocks, only add newly observed ids to TwitterUsers.
Merge pull request #129 from jsha/upnode

Trigger blocks in separate process rather than running in-process.