Add support for MySQL 8.0 and support for TLS/SSL for both Server and Client

Gopkg.toml

@@ -27,23 +27,23 @@
 
 [[constraint]]
   name = "github.com/BurntSushi/toml"
-  version = "0.3.0"
+  version = "v0.3.0"
 
 [[constraint]]
   name = "github.com/go-sql-driver/mysql"
-  version = "1.3.0"
+  branch = "master"
 
 [[constraint]]
   branch = "master"
   name = "github.com/juju/errors"
 
 [[constraint]]
   name = "github.com/satori/go.uuid"
-  version = "1.1.0"
+  version = "v1.2.0"
 
 [[constraint]]
   name = "github.com/shopspring/decimal"
-  version = "1.0.0"
+  version = "v1.1.0"
 
 [[constraint]]
   branch = "master"

README.md

@@ -138,9 +138,16 @@ import (
     "github.com/siddontang/go-mysql/client"
 )
 
-// Connect MySQL at 127.0.0.1:3306, with user root, an empty passowrd and database test
+// Connect MySQL at 127.0.0.1:3306, with user root, an empty password and database test
 conn, _ := client.Connect("127.0.0.1:3306", "root", "", "test")
 
+// Or to use SSL/TLS connection if MySQL server supports TLS
+//conn, _ := client.Connect("127.0.0.1:3306", "root", "", "test", func(c *Conn) {c.UseSSL(true)})
+
+// or to set your own client-side certificates for identity verification for security
+//tlsConfig := NewClientTLSConfig(caPem, certPem, keyPem, false, "your-server-name")
+//conn, _ := client.Connect("127.0.0.1:3306", "root", "", "test", func(c *Conn) {c.SetTLSConfig(tlsConfig)})
+
 conn.Ping()
 
 // Insert
@@ -157,10 +164,17 @@ v, _ := r.GetInt(0, 0)
 v, _ = r.GetIntByName(0, "id") 
 ```
 
+Tested MySQL versions for the client include:
+- 5.5.x
+- 5.6.x
+- 5.7.x
+- 8.0.x
+
 ## Server
 
 Server package supplies a framework to implement a simple MySQL server which can handle the packets from the MySQL client. 
-You can use it to build your own MySQL proxy. 
+You can use it to build your own MySQL proxy. The server connection is compatible with MySQL 5.5, 5.6, 5.7, and 8.0 versions,
+so that most MySQL clients should be able to connect to the Server without modifications.
 
 ### Example
 
@@ -174,14 +188,14 @@ l, _ := net.Listen("tcp", "127.0.0.1:4000")
 
 c, _ := l.Accept()
 
-// Create a connection with user root and an empty passowrd
-// We only an empty handler to handle command too
+// Create a connection with user root and an empty password.
+// You can use your own handler to handle command here.
 conn, _ := server.NewConn(c, "root", "", server.EmptyHandler{})
 
 for {
     conn.HandleCommand()
 }
-```
+``` 
 
 Another shell
 
@@ -190,6 +204,15 @@ mysql -h127.0.0.1 -P4000 -uroot -p
 //Becuase empty handler does nothing, so here the MySQL client can only connect the proxy server. :-) 
 ```
 
+> ```NewConn()``` will use default server configurations:
+> 1. automatically generate default server certificates and enable TLS/SSL support.
+> 2. support three mainstream authentication methods **'mysql_native_password'**, **'caching_sha2_password'**, and **'sha256_password'**
+>    and use **'mysql_native_password'** as default.
+> 3. use an in-memory user credential provider to store user and password.
+>
+> To customize server configurations, use ```NewServer()``` and create connection via ```NewCustomizedConn()```.
+
+
 ## Failover
 
 Failover supports to promote a new master and let other slaves replicate from it automatically when the old master was down.