Allowing more up-to-date boto3 versions (#534)

Author: rishabh-bhargava

Pipfile

@@ -16,8 +16,7 @@ coveralls = "*"
 pytest-cov = "*"
 
 [packages]
-boto3 = "==1.4.4"
-botocore = "==1.5.62"
+boto3 = ">=1.4.4"
 click = "==6.6"
 docutils = "*"
 jmespath = "==0.10.0"