Minor improvements (#39)

README.md

@@ -4,6 +4,8 @@
 
 go-discogs is a Go client library for the [Discogs API](https://www.discogs.com/developers/). Check the usage section to see how to access the Discogs API.
 
+The lib is under MIT but be sure you are familiar with [Discogs API Terms of Use](https://support.discogs.com/hc/en-us/articles/360009334593-API-Terms-of-Use).
+
 ### Feauteres
  * Database
   * [Releases](#releases)
@@ -31,10 +33,11 @@ import "github.com/irlndts/go-discogs"
 Some requests require authentification (as any user). According to [Discogs](https://www.discogs.com/developers/#page:authentication,header:authentication-discogs-auth-flow), to send requests with Discogs Auth, you have two options: sending your credentials in the query string with key and secret parameters or a [token parameter](https://www.discogs.com/settings/developers).
 This is token way example:
 ```go
-client, err := discogs.NewClient(&discogs.Options{
+client, err := discogs.New(&discogs.Options{
         UserAgent: "Some Name",
         Currency:  "EUR", // optional, "USD" (default), "GBP", "EUR", "CAD", "AUD", "JPY", "CHF", "MXN", "BRL", "NZD", "SEK", "ZAR" are allowed
         Token:     "Some Token", // optional
+        URL:       "https://api.discogs.com", // optional
     })
 ``` 
 
@@ -85,5 +88,3 @@ Example
     fmt.Println(r.Title)
   }
 ```
-
-etc. 

discogs.go

@@ -14,22 +14,26 @@ const (
 
 // Options is a set of options to use discogs API client
 type Options struct {
-	URL       string
-	Currency  string
+	// Discogs API endpoint (optional).
+	URL string
+	// Currency to use (optional, default is USD).
+	Currency string
+	// UserAgent to to call discogs api with.
 	UserAgent string
-	Token     string
+	// Token provided by discogs (optional).
+	Token string
 }
 
-// Client is a Discogs client for making Discogs API requests.
-type Client struct {
+// Discogs is a Discogs' client for making Discogs API requests.
+type Discogs struct {
 	Database *DatabaseService
 	Search   *SearchService
 }
 
 var header *http.Header
 
-// NewClient returns a new Client.
-func NewClient(o *Options) (*Client, error) {
+// New returns a new discogs API client.
+func New(o *Options) (*Discogs, error) {
 	header = &http.Header{}
 
 	if o == nil || o.UserAgent == "" {
@@ -52,7 +56,7 @@ func NewClient(o *Options) (*Client, error) {
 		o.URL = discogsAPI
 	}
 
-	return &Client{
+	return &Discogs{
 		Database: newDatabaseService(o.URL, cur),
 		Search:   newSearchService(o.URL + "/database/search"),
 	}, nil

discogs_test.go

@@ -9,7 +9,7 @@ const (
 	testToken     = ""
 )
 
-func initDiscogsClient(t *testing.T, options *Options) *Client {
+func initDiscogsClient(t *testing.T, options *Options) *Discogs {
 	if options == nil {
 		options = &Options{
 			UserAgent: testUserAgent,
@@ -22,7 +22,7 @@ func initDiscogsClient(t *testing.T, options *Options) *Client {
 		options.UserAgent = testUserAgent
 	}
 
-	client, err := NewClient(options)
+	client, err := New(options)
 	if err != nil {
 		t.Fatalf("failed to create client: %s", err)
 	}
@@ -30,7 +30,7 @@ func initDiscogsClient(t *testing.T, options *Options) *Client {
 	return client
 }
 
-func TestNewClient(t *testing.T) {
+func TestNew(t *testing.T) {
 	tests := map[string]struct {
 		options *Options
 		err     error
@@ -53,7 +53,7 @@ func TestNewClient(t *testing.T) {
 	for name := range tests {
 		tt := tests[name]
 		t.Run(name, func(t *testing.T) {
-			if _, err := NewClient(tt.options); err != tt.err {
+			if _, err := New(tt.options); err != tt.err {
 				t.Errorf("err got=%s; want=%s", err, tt.err)
 			}
 		})

examples/discogs_example.go

@@ -7,7 +7,7 @@ import (
 )
 
 func main() {
-	d, err := discogs.NewClient(&discogs.Options{
+	d, err := discogs.New(&discogs.Options{
 		UserAgent: "TestDiscogsClient/0.0.1 +http://example.com",
 		Currency:  "USD",
 		Token:     "",