added open hack session
added open hack session

ProgressiveHackNight/proghacknight.org,ProgressiveHackNight/proghacknight.org,chihacknight/chihacknight.org,CodeandoGuadalajara/codeandoguadalajara.github.io,rebeccawilliams/ecohackresources,chihacknight/chihacknight.org,chihacknight/chihacknight.org,ziegegeist/chihacknight.org,CodeandoGuadalajara/codeandoguadalajara.github.io,ziegegeist/chihacknight.org,ProgressiveHackNight/proghacknight.org,rebeccawilliams/ecohackresources,chihacknight/chihacknight.org,ProgressiveHackNight/proghacknight.org,CodeandoGuadalajara/codeandoguadalajara.github.io,rebeccawilliams/ecohackresources,ziegegeist/chihacknight.org,CodeandoGuadalajara/codeandoguadalajara.github.io,ziegegeist/chihacknight.org