Revert "Rename 2014-09-25-use-openstack-command-line-tools.markdown to 2014-09-25-how-to-install-openvpn-access-server-on-ubuntu-14.04.markdown"

This reverts commit 1f39e0932a1a1c85680a1217679aa92a397691bf.
Create 2014-09-25-how-to-relay-postfix-mails-via-smtp.gmail.com-on-ubuntu-14.04.markdown
Update 2014-09-25-how-to-relay-postfix-mails-via-smtp.gmail.com-on-ubuntu-14.04.markdown

Other Notes and Troubleshooting sections.
Update 2014-09-25-how-to-relay-postfix-mails-via-smtp.gmail.com-on-ubuntu-14.04.markdown
Rename 2014-09-25-how-to-relay-postfix-mails-via-smtp.gmail.com-on-ubuntu-14.04.markdown to 2014-10-06-how-to-relay-postfix-mails-via-smtp.gmail.com-on-ubuntu-14.04.markdown
Remove unwanted image in power8 guide
Update 2014-05-20-how-to-use-runabove-api.markdown

Remove backslashes inside the JSON example
Merge pull request #12 from KDevroede/master

Update 2014-05-20-how-to-use-runabove-api.markdown
Docker guide: fix ruby version (4.9 -> 1.9)

Signed-off-by: Vincent Giersch <vincent.giersch@ovh.net>
Merge pull request #13 from gierschv/fix-ruby

Docker guide: fix ruby version (4.9 -> 1.9)
Update 2014-10-06-how-to-relay-postfix-mails-via-smtp.gmail.com-on-ubuntu-14.04.markdown

More Troubleshooting links.
Update 2014-10-06-how-to-relay-postfix-mails-via-smtp.gmail.com-on-ubuntu-14.04.markdown

Minor Changes to Troubleshooting.
Improve seo
Fix dead link and clarify a sentence
Merge branch 'patch-1' of https://github.com/ne0ark/knowledge-base into ne0ark-patch-1
Merge branch 'ne0ark-patch-1'
Rename guide about postfix/gmail
Fix hello-go guide

- Official go image is named "golang"
- Log http.ListenAndServe result in example
Merge pull request #15 from gierschv/fix-go

Fix hello-go guide
Merge remote-tracking branch 'upstream/master'