Added travis.yml file, added simple test for modlists

.travis.yml

@@ -0,0 +1,9 @@
+language: go
+go: 
+ - 1.4.3
+ - 1.5.4
+ - release
+ - tip
+
+script:
+ - go test -v ./...

mods_test.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+)
+
+var (
+	modDir = "/home/mitch/bin/factorio/mods"
+)
+
+func TestListInstalledMods(t *testing.T) {
+	result, err := listInstalledMods(modDir)
+	if err != nil {
+		t.Errorf("Error listing mods test: %s", err)
+	}
+	if len(result) < 1 {
+		fmt.Println("No Mods installed")
+	}
+}