Move signposts to sample source files from index.ts to the readme and reinforce the key aspects of the sample
Signed-off-by: James Taylor <jamest@uk.ibm.com>
Previously transactions were only retried after being successfully endorsed, and always with the same transaction ID
Transactions will now be added to a queue for processing and will also be retried if endorsement fails (with a different transaction id for invalid transactions)
Signed-off-by: James Taylor <jamest@uk.ibm.com>