Merge pull request #243 from yoheimuta/go1.7-context

Moved golang.org/x/net/context to context

commands/scan.go

@@ -18,6 +18,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 package commands
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"io/ioutil"
@@ -34,7 +35,6 @@ import (
 	"github.com/future-architect/vuls/util"
 	"github.com/google/subcommands"
 	"github.com/k0kubun/pp"
-	"golang.org/x/net/context"
 )
 
 // ScanCmd is Subcommand of host discovery mode