Include pure go sqlite driver in README, close #77 #93

Author: jinzhu

README.md

@@ -15,3 +15,16 @@ db, err := gorm.Open(sqlite.Open("gorm.db"), &gorm.Config{})
 ```
 
 Checkout [https://gorm.io](https://gorm.io) for details.
+
+### Pure go Sqlite Driver
+
+checkout [https://github.com/glebarez/sqlite](https://github.com/glebarez/sqlite) for details
+
+```go
+import (
+  "github.com/glebarez/sqlite"
+  "gorm.io/gorm"
+)
+
+db, err := gorm.Open(sqlite.Open("gorm.db"), &gorm.Config{})
+```