Fixed #153 -- warn and return if no SSH keys found.
Merge pull request #154 from opdemand/153-no-ssh-keys

Fixed #153 -- warn and return if no SSH keys found.
add timeout/attempts to util.connect_ssh, use 120s by default
Added the develop branch to Travis CI.
Merge pull request #155 from opdemand/fix-ec2-ssh-timeout

LGTM.
raise EnvironmentError if no credentials provided
raise 400 on environment error, as in case of missing credentials
handle no credentials error on formation/node destroy
Merge pull request #158 from opdemand/fix-missing-credentials

Fix missing credentials
Fixed #124 -- fill in explicit values for Flavor params.
Merge pull request #159 from opdemand/124-ami-in-flavors

Fixed #124 -- fill in explicit values for Flavor params.

Ultimately we want to move this into the provider modules themselves, but for now this is the easiest way to accomplish the stated goal.  When we implement the next provider we'll tackle how we seed flavors in a pluggable way.
add uniqueness constraint on public key field, with migration and test
Merge pull request #160 from opdemand/fix-duplicate-sshkey

Looks good to me. I'll just have to gen a key when running the acceptance tests.
add 500.html template as part of api staticfiles
Merge pull request #161 from opdemand/add-500-template

Add 500.html template to API application
Fixed #144 -- check provisioning dependencies before running script
Merge pull request #162 from opdemand/144-check-deis-deps

144 check deis deps
retry all chef api calls with configurable attempts and interval
Merge pull request #163 from opdemand/feature/chef-api-retries

LGTM.
Fixed #123 -- updated EC2 AMIs and pointers to them.