Added documentation for HP Vertica and Redshift
Removed dollar-quoted inserts from examples because they broke the syntax-highlighting, when running via jekyll.
Also fixed a copy-and-paste error in the page menu for Redshift and Vertica in documentation.html.
Added database setup documentation for Vertica a Redshift.
Merge pull request #19 from nathanvick/flyway-3.1

Added documentation for HP Vertica and Redshift
Merge branch 'gh-pages' into flyway-3.1
Updated for 3.1
Documentation for DB2 z/OS
Merge remote-tracking branch 'upstream/flyway-3.1' into flyway-3.1
Merge branch 'gh-pages' into flyway-3.1
Merge pull request #22 from cteig/flyway-3.1

Flyway 3.1
Merge branch 'flyway-3.1' of https://github.com/flyway/flywaydb.org into flyway-3.1
Added notes for db2 z/os
Added notes for 754
Added notes for 778
Added notes for 718
Added notes for 800
Added notes for 801
Added notes for 834
Added notes for 779
Merge remote-tracking branch 'origin/gh-pages' into flyway-3.1