Updating README #15

Job	Run time
RPC and mobile compilation check	2m 1s
Sqlc check	23s
cross compilation	19s
check commits	0s
check pinned dependencies (google.golang.org/grpc v1.56.3)	8s
lint code	55s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	3s
sample configuration check	30s
run ubuntu itests (btcd, backend=btcd)	1m 0s
run ubuntu itests (bitcoind, backend=bitcoind)	1m 7s
run unit tests (btcd unit-cover)	2m 4s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	58s
check release notes updated	3s
run unit tests (unit tags="kvdb_etcd")	2m 8s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling")	1m 3s
run unit tests (unit tags="kvdb_postgres")	1m 55s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	1m 9s
run windows itest	1m 57s
run unit tests (unit tags="kvdb_sqlite")	1m 55s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	1m 10s
run unit tests (btcd unit-race)	2m 4s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	1m 2s
run unit tests (unit-module)	1m 35s
run ubuntu itests (neutrino, backend=neutrino)	1m 2s
	26m 31s

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