Dev

[zkong-gsma]

Update,

• Add "Signature" to exchanged Usages.
• added new "tag" key to resources.
• Test Scripts updates

[zkong-gsma]

v0.6 Feature

• Extended Usages resource to support "Signatures"
• Added new "tag" key to usages objects

Others

• Fixes local tests
• Document updates

Dependencies (Test and working with following commits.)

• blockchain-adapter "commit 26f94e4"
• chaincode commit "afff34c"
• calculator-service "commit 7b1c577"