Update badges in README.md to SVG.

Also add a license badge while here.

README.md

@@ -1,8 +1,9 @@
 btcchain
 ========
 
-[![Build Status](https://travis-ci.org/conformal/btcchain.png?branch=master)]
-(https://travis-ci.org/conformal/btcchain)
+[![Build Status](http://img.shields.io/travis/conformal/btcchain.svg)]
+(https://travis-ci.org/conformal/btcchain) [![ISC License]
+(http://img.shields.io/badge/license-ISC-blue.svg)](http://copyfree.org)
 
 Package btcchain implements bitcoin block handling and chain selection rules.
 The test coverage is currently only around 60%, but will be increasing over
@@ -21,7 +22,7 @@ handle processing of blocks into the bitcoin block chain.
 
 ## Documentation
 
-[![GoDoc](https://godoc.org/github.com/conformal/btcchain?status.png)]
+[![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg]
 (http://godoc.org/github.com/conformal/btcchain)
 
 Full `go doc` style documentation for the project can be viewed online without

goclean.sh

@@ -4,8 +4,7 @@
 # 2. goimports     (https://github.com/bradfitz/goimports)
 # 3. golint        (https://github.com/golang/lint)
 # 4. go vet        (http://golang.org/cmd/vet)
-# 5. race detector (http://blog.golang.org/race-detector)
-# 6. test coverage (http://blog.golang.org/cover)
+# 5. test coverage (http://blog.golang.org/cover)
 
 set -e
 
@@ -14,7 +13,6 @@ test -z "$(gofmt -l -w .     | tee /dev/stderr)"
 test -z "$(goimports -l -w . | tee /dev/stderr)"
 test -z "$(golint .          | tee /dev/stderr)"
 go vet ./...
-go test -race ./...
 
 # Run test coverage on each subdirectories and merge the coverage profile.