Merge pull request #43 from robszumski/master

fix(docs): remove extra quotation mark
feat($ip): Substitute $[public|private]_ipv4 in whole user-data
Merge pull request #44 from bcwaldon/ip-sub

feat($ip): Substitute $[public|private]_ipv4 in whole user-data
doc(fields): Document field substitution
Merge pull request #46 from bcwaldon/doc-field-sub

doc(fields): Document field substitution
chore(release): Bump version to v0.2.2
chore(release): Bump version to v0.2.2+git
feat(coreos.oem): Write coreos.oem fields to /etc/oem-release
Merge pull request #49 from bcwaldon/oem-release

oem-release
fix(unit): Default unit command to NOP
Merge pull request #51 from bcwaldon/default-command

fix(unit): Default unit command to NOP
chore(release): Bump version to v0.3.0
chore(release): Bump version to v0.3.0+git
fix(systemd): Fail if daemon-reload returns error
bump(github.com/coreos/go-systemd/dbus): 4fbc5060a317b142e6c7bfbedb65596d5f0ab99b
fix(systemd): Update usage of dbus.Reload
Merge pull request #53 from bcwaldon/fix-reload

Fix systemd daemon-reload
chore(release): Bump version to v0.3.1
chore(release): Bump version to v0.3.1+git
fix(units): Drop automatic daemon-reload