Add an order by query

boil/_fixtures/02.sql

@@ -1 +1 @@
-SELECT "count(*) as ab, thing as bd","stuff" FROM "t";
+SELECT * FROM "q" ORDER BY a ASC,b DESC;

boil/_fixtures/03.sql

@@ -0,0 +1 @@
+SELECT "count(*) as ab, thing as bd","stuff" FROM "t";

boil/query.go

@@ -86,6 +86,11 @@ func buildSelectQuery(q *Query) (*bytes.Buffer, []interface{}) {
 	where, args := whereClause(q)
 	buf.WriteString(where)
 
+	if len(q.orderBy) != 0 {
+		buf.WriteString(" ORDER BY ")
+		buf.WriteString(strings.Join(q.orderBy, ","))
+	}
+
 	if q.limit != 0 {
 		fmt.Fprintf(buf, " LIMIT %d", q.limit)
 	}

boil/query_test.go

@@ -28,6 +28,7 @@ func TestBuildQuery(t *testing.T) {
 	}{
 		{&Query{from: "t"}, nil},
 		{&Query{from: "q", limit: 5, offset: 6}, nil},
+		{&Query{from: "q", orderBy: []string{"a ASC", "b DESC"}}, nil},
 		{&Query{from: "t", selectCols: []string{"count(*) as ab, thing as bd", "stuff"}}, nil},
 	}