feat(lint): add gometalinter

.travis.yml

@@ -7,6 +7,9 @@ go:
 
 before_install:
   - go get github.com/mattn/goveralls
+  - go get -u github.com/alecthomas/gometalinter
+  - gometalinter --install
 
 script:
+  - gometalinter --config=config.json ./...
   - goveralls -service=travis-ci

config.json

@@ -0,0 +1,19 @@
+{
+    "Vendor": false,
+    "DisableAll": true,
+    "Enable": [
+        "vet",
+        "gotype",
+        "safesql",
+        "staticcheck",
+        "errcheck",
+        "goconst",
+        "goimports",
+        "varcheck",
+        "gas",
+        "unconvert",
+        "misspell",
+        "deadcode",
+        "unconvert"
+    ]
+}

router/basic.go

@@ -208,7 +208,7 @@ func (p *Progeny) AddRouter(router Router) {
 			p.PathRouter = router
 		}
 	default:
-		panic(fmt.Sprintf("unknwon router kind: %s", router.Kind()))
+		panic(fmt.Sprintf("unknown router kind: %s", router.Kind()))
 	}
 }
 

router/regexp.go

@@ -16,7 +16,7 @@ type Index struct {
 	Pos int
 }
 
-// RegexpNode contains infomation for matching a regexp segment.
+// RegexpNode contains information for matching a regexp segment.
 type RegexpNode struct {
 	Handler
 	Progeny

router/router.go

@@ -216,7 +216,7 @@ func Split(path string) ([]string, error) {
 	return result, nil
 }
 
-// Segment contains infomation to construct a router.
+// Segment contains information to construct a router.
 type Segment struct {
 	// Match is the target string.
 	Match string