remove env variables check to allow EC2 roles usage

Signed-off-by: koxon <nmenciere@sportarchive.tv>
update REGION variable
remove env variables check to allow EC2 roles usage

Signed-off-by: koxon <nmenciere@sportarchive.tv>
update REGION variable
Merge branch 'master' of https://github.com/koxon/CloudTranscodeComSDK
Merge pull request #5 from koxon/master

Remove global var check