Update Ruby Galaxy v0.2 titles

Author: marcoroth

data/ruby-galaxy/ruby-galaxy-v02/videos.yml

@@ -1,5 +1,5 @@
 ---
-- title: "Open Source Maintainer Interviews (Part 1)"
+- title: "Open Source Maintainer Interviews: Open Source Contributing (Part 1)"
   raw_title: Ruby Galaxy v0.2 - Aaron Patterson
   speakers:
     - Aaron Patterson
@@ -24,7 +24,7 @@
   video_provider: youtube
   video_id: 58N38JgpivQ
 
-- title: "Open Source Maintainer Interviews (Part 2)"
+- title: "Open Source Maintainer Interviews: Sidekiq and Faktory (Part 2)"
   raw_title: Ruby Galaxy v0.2 Aaron Patterson and Mike Perham (Part 2 of 3)
   speakers:
     - Aaron Patterson
@@ -52,7 +52,7 @@
   video_provider: youtube
   video_id: N5isXYght4Q
 
-- title: "Open Source Maintainer Interviews (Part 3)"
+- title: "Open Source Maintainer Interviews: Being an Open Source Community Manager (Part 3)"
   raw_title: Ruby Galaxy v0.2 Mike Perham and Christina Gorton (Part 3 of 3)
   speakers:
     - Mike Perham