read aws credentials from STDIN

[csquared]

fixes #19

works like:

aws sts get-session-token | convox install

[ddollar]

Use STS tokens for install

[ddollar]

mind adding a few tests around this one? i've added a couple of other examples of cli tests for other commands

[csquared]

i thought you'd never ask :)

[csquared]

so testing this isn't super straightforward. a call to install makes multiple network requests to four different hosts:

• convox.s3.amazonaws.com (via convox/release/version
• mixpanel
• aws
• the newly installed kernel

so far i've repurposed some of the controller test code to mock out the interaction w. aws.
right now i just return in install after the call to CreateStack so i could make sure that host was set up correctly.

stubbing out the new kernel should follow the pattern of some of the other tests.

still not sure what i want to do with S3 and mixpanel. i'm tempted to just let the S3 one hit the network but don't want to do that for mixpanel. thoughts welcome.

[ddollar]

I would probably stub out the version-getter and mixpanel. You can create a VersionChecker variable that normally is the object from convox/release/version but can be set to a mock object during the tests.

[csquared]

have to update this to check what we put in

[ddollar]

Use pointers to return credentials so you can nil them

[csquared]

even if i pass in a version, we make network requests. this is ready to merge

[ddollar]

👍