Fix git clone link for Go modules in README (#218)

README.md

@@ -3,15 +3,15 @@
 
 <p align="center"><img src="https://user-images.githubusercontent.com/3185864/32058716-5ee9b512-ba38-11e7-978a-287eb2a62743.png"/></p>
 
-## About 
+## About
 
 Mage is a make-like build tool using Go.  You write plain-old go functions,
 and Mage automatically uses them as Makefile-like runnable targets.
 
 ## Installation
 
 Mage has no dependencies outside the Go standard library, and builds with Go 1.7
-and above (possibly even lower versions, but they're not regularly tested). 
+and above (possibly even lower versions, but they're not regularly tested).
 
 **Using GOPATH**
 
@@ -24,7 +24,7 @@ go run bootstrap.go
 **Using Go Modules**
 
 ```
-git clone https://github.com:magefile/mage
+git clone https://github.com/magefile/mage
 cd mage
 go run bootstrap.go
 ```
@@ -39,16 +39,16 @@ with the correct version information.
 The mage binary will be created in your $GOPATH/bin directory.
 
 You may also install a binary release from our
-[releases](https://github.com/magefile/mage/releases) page. 
+[releases](https://github.com/magefile/mage/releases) page.
 
 ## Demo
 
 [![Mage Demo](https://img.youtube.com/vi/GOqbD0lF-iA/maxresdefault.jpg)](https://www.youtube.com/watch?v=GOqbD0lF-iA)
 
 ## Discussion
 
-Join the `#mage` channel on [gophers slack](https://gophers.slack.com/messages/general/) 
-or post on the [magefile google group](https://groups.google.com/forum/#!forum/magefile) 
+Join the `#mage` channel on [gophers slack](https://gophers.slack.com/messages/general/)
+or post on the [magefile google group](https://groups.google.com/forum/#!forum/magefile)
 for discussion of usage, development, etc.
 
 # Documentation