diff --git a/README.md b/README.md
index 6544a04..4f43cd2 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # 💬 GoSentiwordnet
 
+[![Build Status](https://travis-ci.com/dinopuguh/gosentiwordnet.svg?branch=master)](https://travis-ci.com/dinopuguh/gosentiwordnet) [![Go Report Card](https://goreportcard.com/badge/github.com/dinopuguh/gosentiwordnet)](https://goreportcard.com/report/github.com/dinopuguh/gosentiwordnet) [![codecov](https://codecov.io/gh/dinopuguh/gosentiwordnet/branch/master/graph/badge.svg)](https://codecov.io/gh/dinopuguh/gosentiwordnet)  
+
 Sentiment analyzer using [sentiwordnet](https://github.com/aesuli/SentiWordNet) lexicon in Go. This library produce sentiment score for each word, including positive, negative, and objective score. 
 
 ## ⚙ Installation
diff --git a/example/main.go b/example/main.go
index 794f9cf..98df231 100644
--- a/example/main.go
+++ b/example/main.go
@@ -17,9 +17,9 @@ func main() {
 	sa := goswn.New()
 
 	tokens := []Token{
-		Token{Word: "love", PosTag: "v", Usage: "2"},
-		Token{Word: "neat", PosTag: "a", Usage: "4"},
-		Token{Word: "overacting", PosTag: "n", Usage: "1"},
+		{Word: "love", PosTag: "v", Usage: "2"},
+		{Word: "neat", PosTag: "a", Usage: "4"},
+		{Word: "overacting", PosTag: "n", Usage: "1"},
 	}
 
 	for _, token := range tokens {
diff --git a/gosentiwordnet_test.go b/gosentiwordnet_test.go
index c179144..a6a7288 100644
--- a/gosentiwordnet_test.go
+++ b/gosentiwordnet_test.go
@@ -16,10 +16,10 @@ type SentimentTestCase struct {
 
 func generateTestCases() []SentimentTestCase {
 	return []SentimentTestCase{
-		SentimentTestCase{Word: "love", PosTag: "v", Usage: "2", Scores: gosentiwordnet.Sentiment{Positive: 1, Negative: 0, Objective: 0}},
-		SentimentTestCase{Word: "neat", PosTag: "a", Usage: "4", Scores: gosentiwordnet.Sentiment{Positive: 0.625, Negative: 0, Objective: 0.375}},
-		SentimentTestCase{Word: "overacting", PosTag: "n", Usage: "1", Scores: gosentiwordnet.Sentiment{Positive: 0, Negative: 0.875, Objective: 0.125}},
-		SentimentTestCase{Word: "finely", PosTag: "r", Usage: "2", Scores: gosentiwordnet.Sentiment{Positive: 0.625, Negative: 0, Objective: 0.375}},
+		{Word: "love", PosTag: "v", Usage: "2", Scores: gosentiwordnet.Sentiment{Positive: 1, Negative: 0, Objective: 0}},
+		{Word: "neat", PosTag: "a", Usage: "4", Scores: gosentiwordnet.Sentiment{Positive: 0.625, Negative: 0, Objective: 0.375}},
+		{Word: "overacting", PosTag: "n", Usage: "1", Scores: gosentiwordnet.Sentiment{Positive: 0, Negative: 0.875, Objective: 0.125}},
+		{Word: "finely", PosTag: "r", Usage: "2", Scores: gosentiwordnet.Sentiment{Positive: 0.625, Negative: 0, Objective: 0.375}},
 	}
 }
 
diff --git a/helpers/substrings.go b/helpers/substrings.go
index 128a0ba..1a56e1b 100644
--- a/helpers/substrings.go
+++ b/helpers/substrings.go
@@ -2,6 +2,7 @@ package helpers
 
 import "strings"
 
+// CheckSubstrings checks the string containing substring or not
 func CheckSubstrings(str string, subs ...string) bool {
 	isMatch := true