DSCGS-19 Fix golint errors

artists.go

@@ -17,12 +17,12 @@ func newArtistService(url string) *ArtistService {
 type Artist struct {
 	Namevariations []string `json:"namevariations"`
 	Profile        string   `json:"profile"`
-	Releases_url   string   `json:"releases_url"`
-	Resource_url   string   `json:"resource_url"`
-	Uri            string   `json:"uri"`
-	Urls           []string `json:"urls"`
-	Data_quality   string   `json:"data_quality"`
-	Id             int      `json:"id"`
+	ReleasesURL    string   `json:"releases_url"`
+	ResourceURL    string   `json:"resource_url"`
+	URI            string   `json:"uri"`
+	URLs           []string `json:"urls"`
+	DataQuality    string   `json:"data_quality"`
+	ID             int      `json:"id"`
 	Images         []Image  `json:"images"`
 	Members        []Member `json:"members"`
 }

discogs.go

@@ -12,6 +12,7 @@ const (
 	discogsAPI = "https://api.discogs.com/"
 )
 
+// Options is a set of options to use discogs API client
 type Options struct {
 	URL       string
 	Currency  string
@@ -73,7 +74,7 @@ func currency(c string) (string, error) {
 	case "":
 		return "USD", nil
 	default:
-		return "", fmt.Errorf("%v\n", "Invalid currency abbreviation.")
+		return "", fmt.Errorf("%v", "invalid currency abbreviation")
 	}
 }
 

masters.go

@@ -4,6 +4,7 @@ import (
 	"strconv"
 )
 
+// MasterService ...
 type MasterService struct {
 	url string
 }
@@ -17,21 +18,21 @@ func newMasterService(url string) *MasterService {
 // Master resource represents a set of similar releases.
 // Masters (also known as `master releases`) have a `main release` which is often the chronologically earliest.
 type Master struct {
-	Styles           []string `json:"styles"`
-	Genres           []string `json:"genres"`
-	Videos           []Video  `json:"videos"`
-	Title            string   `json:"title"`
-	Main_release     int      `json:"main_release"`
-	Main_release_url string   `json:"main_release_url"`
-	Uri              string   `json:"uri"`
-	Artists          []Artist `json:"artists"`
-	Version_url      string   `json:"version_url"`
-	Year             int      `json:"year"`
-	Images           []Image  `json:"images"`
-	Resource_url     string   `json:"resource_url"`
-	Tracklist        []Track  `json:"tracklist"`
-	Id               int      `json:"id"`
-	Data_quality     string   `json:"data_quality"`
+	Styles         []string `json:"styles"`
+	Genres         []string `json:"genres"`
+	Videos         []Video  `json:"videos"`
+	Title          string   `json:"title"`
+	MainRelease    int      `json:"main_release"`
+	MainReleaseURL string   `json:"main_release_url"`
+	URI            string   `json:"uri"`
+	Artists        []Artist `json:"artists"`
+	VersionURL     string   `json:"version_url"`
+	Year           int      `json:"year"`
+	Images         []Image  `json:"images"`
+	ResourceURL    string   `json:"resource_url"`
+	Tracklist      []Track  `json:"tracklist"`
+	ID             int      `json:"id"`
+	DataQuality    string   `json:"data_quality"`
 }
 
 // Master returns a master release

models.go

@@ -53,7 +53,7 @@ type LabelSource struct {
 	ResourceURL string `json:"resource_url"`
 }
 
-// Itentifier ...
+// Identifier ...
 type Identifier struct {
 	Type  string `json:"type"`
 	Value string `json:"value"`

releases.go

@@ -79,7 +79,7 @@ type ReleaseRating struct {
 	Rating Rating `json:"rating"`
 }
 
-// Ratings retruns community release rating
+// Rating retruns community release rating
 func (s *ReleaseService) Rating(releaseID int) (*ReleaseRating, error) {
 	var rating *ReleaseRating
 	if err := request(s.url+strconv.Itoa(releaseID)+"/rating", nil, &rating); err != nil {

search.go

@@ -15,7 +15,7 @@ func newSearchService(url string) *SearchService {
 	}
 }
 
-// SerachRequest describes search request
+// SearchRequest describes search request
 type SearchRequest struct {
 	Q            string `url:"q,omitempty"`             // search query
 	Type         string `url:"type,omitempty"`          // one of release, master, artist, label