Start regular community meetings

[castrojo]

Start every other week.

• Write meeting template
  - Template here: https://hackmd.io/PUGjZPKUS4OjS0WAYVoITg?both
• Find hosts and other participants
• Propose first agenda to the community
• Announce to the mailing list and gitter
• Generate calendar invite for google group (carefully!)
• Iterate 😄