Make the code tidy and fixed typo (#84)

* fix typo
builder/README.md:289:53: "recieved" is a misspelling of "received"
manager/README.md:59:4: "recieves" is a misspelling of "receives"

* better code

builder/README.md

@@ -286,7 +286,7 @@ sign: `BuildDelete(table string, where map[string]interface{}) (string, []interf
 If you use `Prepare && stmt.SomeMethods` then You have no need to worry about the safety.
 Prepare is a safety mechanism backed by `mysql`, it makes sql injection out of work.
 
-So `builder` **doesn't** escape the string values it recieved -- it's unnecessary
+So `builder` **doesn't** escape the string values it received -- it's unnecessary
 
 If you call `db.Query(cond, vals...)` directly, and you **don't** set `interpolateParams` which is one of the driver's variables to `true`, the driver actually will still prepare a stmt.So it's safe.
 

builder/dao.go

@@ -229,7 +229,7 @@ func (bt Between) Build() ([]string, []interface{}) {
 }
 
 func betweenBuilder(bt map[string][]interface{}, notBetween bool) ([]string, []interface{}) {
-	if bt == nil || len(bt) == 0 {
+	if len(bt) == 0 {
 		return nil, nil
 	}
 	var cond []string

manager/README.md

@@ -56,7 +56,7 @@ Port sets the server port,default 3306
 
 `func (o *Option) Set(sets ...Setting) *Option`
 
-Set recieves a series of Set*-like functions
+Set receives a series of Set*-like functions
 
 ---
 

scanner/scanner_test.go

@@ -419,7 +419,12 @@ func Test_Scan_Pointer(t *testing.T) {
 		mp := map[string]interface{}{
 			"age": tc.in,
 		}
-		bind(mp, &u)
+		err := bind(mp, &u)
+		if err == nil {
+			ass.NoError(err)
+		} else {
+			ass.Error(err)
+		}
 		ass.Equal(tc.out, *u.Age, "case #%d fail", idx)
 	}
 }
@@ -428,10 +433,6 @@ func float64Ptr(v float64) *float64 {
 	return &v
 }
 
-func int64Ptr(v int64) *int64 {
-	return &v
-}
-
 func stringPtr(s string) *string {
 	return &s
 }
@@ -490,7 +491,12 @@ func Test_Scan_Multi_Pointer(t *testing.T) {
 	ass := assert.New(t)
 	for idx, tc := range testData {
 		var u user
-		bind(tc.in, &u)
+		err := bind(tc.in, &u)
+		if err == nil {
+			ass.NoError(err)
+		} else {
+			ass.Error(err)
+		}
 		ass.Equal(tc.out, u, "case #%d fail %+v", idx, u)
 	}
 }