app: add a config load in init

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

app.go

@@ -6,11 +6,33 @@
 
 package main
 
-import "flag"
+import (
+	"flag"
+	"log"
+	"os"
+	"path/filepath"
+)
+
+var (
+	config   *Config
+	flConfig = flag.String("config", filepath.Join(os.Getenv("HOME"), ".SyncRefs.conf"), "configuration file path")
+)
 
 func main() {
 	flag.Parse()
+	fh, err := os.Open(*flConfig)
+	if err != nil && !os.IsNotExist(err) {
+		log.Fatal(err)
+	}
+	if fh != nil {
+		config, err = ReadConfig(fh)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
 
+	// Build relationships of each group
+	// there needs to be a quit chan to hand off to each watcher and group
 	for _, arg := range flag.Args() {
 		WatchPath(arg)
 	}