Vendor all dependencies

Uses godep to vendor dependencies. Godeps is not necessary during build,
golang's new vendor support is used instead.

vendor/github.com/godbus/dbus/conn_other.go

@@ -0,0 +1,27 @@
+// +build !darwin
+
+package dbus
+
+import (
+	"bytes"
+	"errors"
+	"os/exec"
+)
+
+func sessionBusPlatform() (*Conn, error) {
+	cmd := exec.Command("dbus-launch")
+	b, err := cmd.CombinedOutput()
+
+	if err != nil {
+		return nil, err
+	}
+
+	i := bytes.IndexByte(b, '=')
+	j := bytes.IndexByte(b, '\n')
+
+	if i == -1 || j == -1 {
+		return nil, errors.New("dbus: couldn't determine address of session bus")
+	}
+
+	return Dial(string(b[i+1 : j]))
+}