Merge branch 'tender-requirements' into 'master'

adding tender specification docuemnts

See merge request !1

README.md

-# Documentation
+# Introduction
+
+The purpuse of this repository is to hold specific information related to `Personal Credential Manager` project: 
+
+* Initial high level requirement which are specific for the project
+* Technical documentation and diagrams
+* Agreed tools and libraries
+* Outcome of researches
+
 
 ## Conceptual Diagram