Update go-pluggable

vendor/github.com/chuckpreslar/emission/README.md

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+emission
+--------
+
+A simple event emitter for Go.
+
+[![Build Status](https://drone.io/github.com/chuckpreslar/emission/status.png)](https://drone.io/github.com/chuckpreslar/emission/latest)
+
+## Installation
+
+With Google's [Go](http://www.golang.org) installed on your machine:
+
+    $ go get -u github.com/chuckpreslar/emission
+
+## Usage
+
+If you've ever used an event emitter before, using Emission should be very familiar.
+
+```go
+package main
+
+import (
+  "fmt"
+)
+
+import (
+  "github.com/chuckpreslar/emission"
+)
+
+func main() {
+  emitter := emission.NewEmitter()
+
+  hello := func(to string) {
+    fmt.Printf("Hello %s!\n", to)
+  }
+  
+  count := func(count int) {
+    for i := 0; i < count; i++ {
+      fmt.Println(i)
+    }
+  }
+  
+  emitter.On("hello", hello).
+    On("count", count).
+    Emit("hello", "world").
+    Emit("count", 5)
+}
+
+```
+
+## About
+
+The `emission` package provides an event emitter making use of the reflect packages ability to call functions.  Using the `Call` method on the value of a function allows passing any type of function to the event emiiter, regardless of the functions parameters.
+
+## Documentation
+
+View godoc's or visit [godoc.org](http://godoc.org/github.com/chuckpreslar/emission).
+
+    $ godoc emission
+    
+## License
+
+> The MIT License (MIT)
+
+> Copyright (c) 2013 - 2015 Chuck Preslar
+
+> Permission is hereby granted, free of charge, to any person obtaining a copy
+> of this software and associated documentation files (the "Software"), to deal
+> in the Software without restriction, including without limitation the rights
+> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+> copies of the Software, and to permit persons to whom the Software is
+> furnished to do so, subject to the following conditions:
+
+> The above copyright notice and this permission notice shall be included in
+> all copies or substantial portions of the Software.
+
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+> THE SOFTWARE.