more travis changes

.travis.yml

 before_install: sudo apt-get install libgmp3-dev
 install:
+  - go get
   - go get code.google.com/p/go.tools/cmd/goimports
   - go get github.com/golang/lint/golint
   - go get code.google.com/p/go.tools/cmd/vet
 language: go
 go:
   - 1.3
-after_script:
+before_script:
+  # - gofmt -l -w .
+  # - goimports -l -w .
+  # - golint .
+  # - go vet ./...
+  # - go test -race ./...
   - ./gocoverage.sh