refactor to generalize set dictionary function, not finished yet

trie.go

@@ -107,6 +107,6 @@ func (j *Jieba) LoadUserDict(dictFilePath string) error {
 // sentence.
 func NewJieba(dictFileName string) (*Jieba, error) {
 	j := &Jieba{Total: 0.0, Freq: make(map[string]float64)}
-	err := j.load(dictFileName)
+	err := SetDict(j, dictFileName, false)
 	return j, err
 }