CFY-849 added 'allow-custom-parameters' flag to 'execute workflow' command
CFY-849 updated doc for 'allow_custom_parameters' parameter in execute workflow command
Merge remote-tracking branch 'origin/feature/CFY-849-add-parameter-for-specifying-if-custom-parameters-to-execution-is-allowed' into feature/CFY-849-add-parameter-for-specifying-if-custom-parameters-to-execution-is-allowed
Merge pull request #35 from cloudify-cosmo/feature/CFY-849-add-parameter-for-specifying-if-custom-parameters-to-execution-is-allowed

Feature/cfy 849 add parameter for specifying if custom parameters to execution is allowed