Common: bump Scala to 2.11 in .travis.yml (closes #3227)
Common: bump Scala to 2.11 in .travis.yml (closes #3227)

haensel-ams/snowplow,haensel-ams/snowplow,haensel-ams/snowplow,haensel-ams/snowplow,haensel-ams/snowplow,haensel-ams/snowplow