Add unit tests

vendor/github.com/spf13/viper/README.md

@@ -185,13 +185,13 @@ with ENV:
  * `AutomaticEnv()`
  * `BindEnv(string...) : error`
  * `SetEnvPrefix(string)`
- * `SetEnvKeyReplacer(string...) *strings.Replacer`
+ * `SetEnvReplacer(string...) *strings.Replacer`
 
 _When working with ENV variables, it’s important to recognize that Viper
 treats ENV variables as case sensitive._
 
 Viper provides a mechanism to try to ensure that ENV variables are unique. By
-using `SetEnvPrefix`, you can tell Viper to use a prefix while reading from
+using `SetEnvPrefix`, you can tell Viper to use add a prefix while reading from
 the environment variables. Both `BindEnv` and `AutomaticEnv` will use this
 prefix.
 
@@ -212,7 +212,7 @@ time a `viper.Get` request is made. It will apply the following rules. It will
 check for a environment variable with a name matching the key uppercased and
 prefixed with the `EnvPrefix` if set.
 
-`SetEnvKeyReplacer` allows you to use a `strings.Replacer` object to rewrite Env
+`SetEnvReplacer` allows you to use a `strings.Replacer` object to rewrite Env
 keys to an extent. This is useful if you want to use `-` or something in your
 `Get()` calls, but want your environmental variables to use `_` delimiters. An
 example of using it can be found in `viper_test.go`.
@@ -373,33 +373,12 @@ how to use Consul.
 
 ### Remote Key/Value Store Example - Unencrypted
 
-#### etcd
 ```go
 viper.AddRemoteProvider("etcd", "http://127.0.0.1:4001","/config/hugo.json")
 viper.SetConfigType("json") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop"
 err := viper.ReadRemoteConfig()
 ```
 
-#### Consul
-You need to set a key to Consul key/value storage with JSON value containing your desired config.  
-For example, create a Consul key/value store key `MY_CONSUL_KEY` with value:
-
-```json
-{
-    "port": 8080,
-    "hostname": "myhostname.com"
-}
-```
-
-```go
-viper.AddRemoteProvider("consul", "localhost:8500", "MY_CONSUL_KEY")
-viper.SetConfigType("json") // Need to explicitly set this to json
-err := viper.ReadRemoteConfig()
-
-fmt.Println(viper.Get("port")) // 8080
-fmt.Println(viper.Get("hostname")) // myhostname.com
-```
-
 ### Remote Key/Value Store Example - Encrypted
 
 ```go
@@ -458,7 +437,6 @@ The following functions and methods exist:
  * `GetTime(key string) : time.Time`
  * `GetDuration(key string) : time.Duration`
  * `IsSet(key string) : bool`
- * `AllSettings() : map[string]interface{}`
 
 One important thing to recognize is that each Get function will return a zero
 value if it’s not found. To check if a given key exists, the `IsSet()` method
@@ -612,27 +590,6 @@ if err != nil {
 }
 ```
 
-### Marshalling to string
-
-You may need to marhsal all the settings held in viper into a string rather than write them to a file. 
-You can use your favorite format's marshaller with the config returned by `AllSettings()`.
-
-```go
-import (
-    yaml "gopkg.in/yaml.v2"
-    // ...
-) 
-
-func yamlStringSettings() string {
-    c := viper.AllSettings()
-	bs, err := yaml.Marshal(c)
-	if err != nil {
-        t.Fatalf("unable to marshal config to YAML: %v", err)
-    }
-	return string(bs)
-}
-```
-
 ## Viper or Vipers?
 
 Viper comes ready to use out of the box. There is no configuration or