Set new Open Hub Project URL

README.md

@@ -23,7 +23,7 @@ Code Quality:
 
 General Project Info:
 
-[![Ohloh Project Status](https://www.ohloh.net/p/open62541/widgets/project_thin_badge.gif)](https://www.ohloh.net/p/open62541)
+[![Open Hub Project Status](https://www.openhub.net/p/open62541/widgets/project_thin_badge.gif)](https://www.openhub.net/p/open62541/)
 [![Overall Downloads](https://img.shields.io/github/downloads/open62541/open62541/total.svg)](https://github.com/open62541/open62541/releases)
 
 ### Features and Certification