Update README URLs based on HTTP redirects

[ReadmeCritic]

Created with https://github.com/dkhamsing/frankenstein

GitHub Corrected URLs

Was	Now
https://github.com/awslabs/aws-sdk-cpp	https://github.com/aws/aws-sdk-cpp

HTTPS Corrected URLs

Was	Now
http://github.com/boto/boto#installation	https://github.com/boto/boto#installation
http://www.awsarchitectureblog.com/	https://www.awsarchitectureblog.com/

Other Corrected URLs

Was	Now
http://docs.aws.amazon.com/gettingstarted/latest/emr/getting-started-emr-overview.html	http://docs.aws.amazon.com/ElasticMapReduce/latest/ManagementGuide/emr-gs.html
http://docs.aws.amazon.com/gettingstarted/latest/emr/getting-started-emr-sentiment-tutorial.html	http://docs.aws.amazon.com/ElasticMapReduce/latest/ManagementGuide/emr-gs.html
http://docs.aws.amazon.com/gettingstarted/latest/emr/getting-started-emr-tutorial.html	http://docs.aws.amazon.com/ElasticMapReduce/latest/ManagementGuide/emr-gs.html

[codecov-io]

Current coverage is 96.59%

Merging #40 into master will not affect coverage as of 5cffaf4

@@            master     #40   diff @@
======================================
  Files            3       3       
  Stmts           88      88       
  Branches         0       0       
  Methods          0       0       
======================================
  Hit             85      85       
  Partial          0       0       
  Missed           3       3       

Review entire Coverage Diff as of 5cffaf4

Powered by Codecov. Updated on successful CI builds.