Fix README mistakes.

Author: bradfitz

README.md

@@ -11,15 +11,7 @@ This is a memcache client library for the Go programming language
 
 After this command *gomemcache* is ready to use. Its source will be in:
 
-    $GOROOT/src/pkg/github.com/bradfitz/gomemcache/memcache
-
-You can use `go get -u -a` for update all installed packages.
-
-### Using *git clone* command:
-
-    $ git clone git://github.com/bradfitz/gomemcache
-    $ cd gomemcache/memcache
-    $ make install
+    $GOPATH/src/github.com/bradfitz/gomemcache/memcache
 
 ## Example
 
@@ -37,7 +29,7 @@ You can use `go get -u -a` for update all installed packages.
 
 ## Full docs, see:
 
-See http://godoc.org/github.com/bradfitz/gomemcache/memcache
+See https://godoc.org/github.com/bradfitz/gomemcache/memcache
 
 Or run: