Update tools list

Author: mr-c

README.md

@@ -69,6 +69,8 @@ Please cite https://dx.doi.org/10.6084/m9.figshare.3115156.v2
 |[cwl2argparse](https://github.com/common-workflow-language/cwl2argparse)|Generate Python argparse code from CWL CommandLineTool description.|
 |[pypi2cwl](https://github.com/common-workflow-language/pypi2cwl)|Automatically run argparse2cwl on any package in PyPi|
 |[cwlavro](https://github.com/common-workflow-language/cwlavro)|Java classes for loading CWL documents|
+|[acd2cwl](https://github.com/common-workflow-language/acd2cwl)|CWL generator for ACD (EMBOSS) files |
+|[CWLviewer](https://github.com/MarkRobbo/CWLViewer)|A web application to view and share Common Workflow Language workflows|
 
 ## Support, Community and Contributing