Added IamAuthorizer class to support AWS_IAM authorizor on API Gateway

[zepplen]

No description provided.

[codecov-io]

Codecov Report

Merging #334 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master    #334      +/-   ##
=========================================
+ Coverage   89.87%   89.9%   +0.03%     
=========================================
  Files          18      18              
  Lines        1986    1992       +6     
  Branches      240     240              
=========================================
+ Hits         1785    1791       +6     
  Misses        147     147              
  Partials       54      54

Impacted Files	Coverage Δ
chalice/__init__.py	100% <ø> (ø)	⬆️
chalice/app.py	95.23% <100%> (+0.1%)	⬆️

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov-io]

Codecov Report

Merging #334 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master    #334      +/-   ##
=========================================
+ Coverage   89.87%   89.9%   +0.03%     
=========================================
  Files          18      18              
  Lines        1986    1992       +6     
  Branches      240     240              
=========================================
+ Hits         1785    1791       +6     
  Misses        147     147              
  Partials       54      54

Impacted Files	Coverage Δ
chalice/__init__.py	100% <ø> (ø)	⬆️
chalice/app.py	95.23% <100%> (+0.1%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c5ddc5c...147361c. Read the comment docs.

[jamesls]

Awesome! Thanks for the pull request, I'm trying this out now.

[jamesls]

Looks good to me, I made a small change and renamed IamAuthorizer to IAMAuthorizer to be consistent with our naming conventions. Otherwise looks good, thanks again for the pull request!