Linking to Flux from README.md
Linking to Flux from README.md

Making it easier for interested parties to find Flux. Also linking to the best resource so far, which is @pauldix's presentation.

influxdb/influxdb,mark-rushakoff/influxdb,nooproblem/influxdb,nooproblem/influxdb,influxdata/influxdb,nooproblem/influxdb,influxdata/influxdb,li-ang/influxdb,nooproblem/influxdb,li-ang/influxdb,nooproblem/influxdb,influxdb/influxdb,influxdb/influxdb,influxdb/influxdb,mark-rushakoff/influxdb,influxdb/influxdb,mark-rushakoff/influxdb,mark-rushakoff/influxdb,mark-rushakoff/influxdb,mark-rushakoff/influxdb,influxdb/influxdb