fix(google-compute-engine): Change hard-coded versions to template variables.
Merge pull request #72 from robszumski/master

fix(systemd guide): remove erroneous -d flag
Merge pull request #71 from marineam/gce-version

fix(google-compute-engine): Change hard-coded versions to template variables
Fix typo at top of systemd doc.
Merge pull request #73 from echohead/fix-typo

Fix typo at top of systemd doc.
fix(guides/resize): change h2 to h1
fix(guides/resize): change h3s to h2s
feat(reorg): major reorganization