Update to coveralls.io for test coverage reporting.

Also add a test coverage badge to the README.md.

.travis.yml

@@ -4,3 +4,10 @@ go:
   - tip
 install:
   - go get -d -t -v ./...
+  - go get -v code.google.com/p/go.tools/cmd/cover
+script:
+  - go test -v -covermode=count -coverprofile=profile.cov
+after_success:
+  - go get -v github.com/mattn/goveralls
+  - export PATH=$PATH:$HOME/gopath/bin
+  - goveralls -coverprofile=profile.cov -service=travis-ci

README.md

@@ -2,7 +2,9 @@ btcnet
 ======
 
 [![Build Status](https://travis-ci.org/conformal/btcnet.png?branch=master)]
-(https://travis-ci.org/conformal/btcnet)
+(https://travis-ci.org/conformal/btcnet) [![Coverage Status]
+(https://coveralls.io/repos/conformal/btcnet/badge.png?branch=master)]
+(https://coveralls.io/r/conformal/btcnet?branch=master)
 
 Package btcnet defines the network parameters for the three standard Bitcoin 
 networks and provides the ability for callers to define their own custom