docs: 新增配置godis说明，修改帮助文档首字母为大写

Author: lihuacai168

README.md

@@ -1,7 +1,15 @@
-# godis
+# 什么是godis
 - 使用`golang`实现的`redis cli`,二进制文件直接运行，无需任何依赖
 - 支持安全模式，限制只能运行只读命令
 - 支持常用`cluster`和`alone`模式的常用命令
+
+# godis加入环境变量
+- 下载release中对应平台的压缩包
+- 解压，得到godis可执行文件
+- 把`godis`可执行文件移动到`/usr/local/bin/`目录中（适用于Mac和Linux）
+- `Windows`需要把`godis`所在的路径加入到系统的环境变量中
+
+配置好之后，在命令行终端输入`godis`就能直接使用啦~
 ```
 $ godis
 A utility redis command line
@@ -11,19 +19,19 @@ Usage:
 
 Available Commands:
   config      Handle godis configuration
-  del         delete a key
-  exists      assure a key is exists
-  hcopy       copy a hash key
-  hdel        hash key hget
+  del         Delete a key
+  exists      Assure a key is exists
+  hcopy       Copy a hash key
+  hdel        Hash key hdel
   help        Help about any command
-  hget        hash key hget
-  hgetall     hash key hgetall
-  hmset       add a hash key, auto unpack jsonValue
-  renamenx    rename key, if new_key is exist return fail, else success
-  sadd        add a set key
-  smembers    get set key values
-  ttl         get key ttl
-  type        get key type
+  hget        Hash key hget
+  hgetall     Hash key hgetall
+  hmset       Add a hash key, auto unpack jsonValue
+  renamenx    Rename key, if new_key is exist return fail, else success
+  sadd        Add a set key
+  smembers    Get set key values
+  ttl         Get key ttl
+  type        Get key type
 ```
 
 

cmd/godis/hash.go

@@ -58,7 +58,7 @@ var hGetAllCmdShort = hGetAllCmd
 var hGetAllCmd = &cobra.Command{
 	Use:     "hgetall [key]",
 	Aliases: []string{"hga"},
-	Short:   "hash key hgetall",
+	Short:   "Hash key hgetall",
 	Args:    cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
 		result := hGetAll(args[0])
@@ -70,7 +70,7 @@ var hGetCmdShort = hGetCmd
 var hGetCmd = &cobra.Command{
 	Use:     "hget [key] [field]",
 	Aliases: []string{"hg"},
-	Short:   "hash key hget",
+	Short:   "Hash key hget",
 	Args:    cobra.ExactArgs(2),
 	Run: func(cmd *cobra.Command, args []string) {
 		result := hGet(args[0], args[1])
@@ -83,7 +83,7 @@ var hDelCmdShort = hDelCmd
 var hDelCmd = &cobra.Command{
 	Use:     "hdel [key] [field]",
 	Aliases: []string{"hd"},
-	Short:   "hash key hget",
+	Short:   "Hash key hdel",
 	Args:    cobra.ExactArgs(2),
 	Run: func(cmd *cobra.Command, args []string) {
 		if !isExists(args[0]) {
@@ -98,7 +98,7 @@ var hashCopyCmdShort = hashCopyCmd
 var hashCopyCmd = &cobra.Command{
 	Use:     "hcopy [old_key] [new_key]",
 	Aliases: []string{"hcp"},
-	Short:   "copy a hash key",
+	Short:   "Copy a hash key",
 	Args:    cobra.ExactArgs(2),
 	Run: func(cmd *cobra.Command, args []string) {
 		result := hGetAll(args[0])
@@ -120,7 +120,7 @@ var hmsetCmdShort = hmsetCmd
 var hmsetCmd = &cobra.Command{
 	Use:     "hmset [key] [jsonValue]",
 	Aliases: []string{"hms"},
-	Short:   "add a hash key, auto unpack jsonValue",
+	Short:   "Add a hash key, auto unpack jsonValue",
 	Args:    cobra.ExactArgs(2),
 	Example: `godis hash hmset test_key '{"a":1, "b": "b"}'`,
 	Run: func(cmd *cobra.Command, args []string) {

cmd/godis/key.go

@@ -24,7 +24,7 @@ import (
 var deleteCmd = &cobra.Command{
 	Use:     "del [key]",
 	Aliases: []string{"rm", "delete"},
-	Short:   "delete a key",
+	Short:   "Delete a key",
 	Args:    cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
 		if !isExists(args[0]) {
@@ -45,7 +45,7 @@ var deleteCmd = &cobra.Command{
 
 var existsCmd = &cobra.Command{
 	Use:   "exists [key]",
-	Short: "assure a key is exists",
+	Short: "Assure a key is exists",
 	Args:  cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
 		if isExists(args[0]) {
@@ -69,7 +69,7 @@ var keysCmd = &cobra.Command{
 
 var typeCmd = &cobra.Command{
 	Use:   "type [key]",
-	Short: "get key type",
+	Short: "Get key type",
 	Args:  cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
 		res := typeKey(args[0])
@@ -78,7 +78,7 @@ var typeCmd = &cobra.Command{
 }
 var ttlCmd = &cobra.Command{
 	Use:   "ttl [key]",
-	Short: "get key ttl",
+	Short: "Get key ttl",
 	Args:  cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
 		res := ttlKey(args[0])
@@ -88,7 +88,7 @@ var ttlCmd = &cobra.Command{
 var renamenxCmd = &cobra.Command{
 	Use:     "renamenx [old_key] [new_key]",
 	Aliases: []string{"mv"},
-	Short:   "rename key, if new_key is exist return fail, else success",
+	Short:   "Rename key, if new_key is exist return fail, else success",
 	Args:    cobra.ExactArgs(2),
 	Run: func(cmd *cobra.Command, args []string) {
 		//修改成功时，返回 1 。 如果 NEW_KEY_NAME 已经存在，返回 0 。

cmd/godis/set.go

@@ -51,7 +51,7 @@ var SMembersCmdShort = SMembersCmd
 var SMembersCmd = &cobra.Command{
 	Use:     "smembers [key]",
 	Aliases: []string{"sget"},
-	Short:   "get set key values",
+	Short:   "Get set key values",
 	Args:    cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
 		result := SMembers(args[0])
@@ -84,7 +84,7 @@ func SMembers(key string) []byte {
 var SAddCmdShort = SAddCmd
 var SAddCmd = &cobra.Command{
 	Use:   "sadd [key] member1 member2 member3...",
-	Short: "add a set key",
+	Short: "Add a set key",
 	Args:  cobra.RangeArgs(2, int(^uint(0)>>1)),
 	Run: func(cmd *cobra.Command, args []string) {
 		members := make([]interface{}, len(args))