Trying to fix cblas deps

.travis.yml

@@ -5,5 +5,7 @@ go:
  - release
  - tip
 install:
+ - sudo apt-get install libblas-dev
+ - gcc -lblas ...
  - go get github.com/smartystreets/goconvey/convey
  - go get -v ./...

optimisation/gradientdescent_test.go

@@ -1,10 +1,9 @@
 package optimisation
 
 import (
-	"testing"
-
 	"github.com/gonum/blas/cblas"
 	"github.com/gonum/matrix/mat64"
+	"testing"
 )
 
 func init() {