Reorganize the project layout, fix some logging quirks

Signed-off-by: Shin'ya Minazuki <shinyoukai@laidback.moe>

mirai/config.go

@@ -0,0 +1,34 @@
+package mirai
+
+import (
+	"log"
+	"os"
+	"gopkg.in/ini.v1"
+)
+
+var Config struct {
+	Host string
+	Token string
+}
+
+func ConfInit() {
+	config, err := os.UserConfigDir()
+        if err != nil {
+                log.Println("Unable to obtain user's configuration directory")
+                log.Fatal(err)
+        }
+        configPath := config + "/mikuru.ini"
+        Parse(configPath)
+}
+
+func Parse(file string) error {
+	cfg, err := ini.Load(file)
+	if err != nil {
+		return err
+	}
+
+	Config.Host = cfg.Section("mikuru").Key("host").String()
+	Config.Token = cfg.Section("mikuru").Key("token").String()
+
+	return nil
+}

mirai/version.go

@@ -0,0 +1,17 @@
+package mirai
+
+import (
+	"fmt"
+)
+
+var (
+	Revision = "0"
+	Version = "0"
+)
+
+func FullVersion() string {
+	return fmt.Sprintf("%s (r%s)", Version, Revision)
+}
+func PrintVersion() string {
+	return fmt.Sprintf("%s", Version)
+}