Working tty and io support in shim

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

shim/process.go

@@ -1,12 +1,12 @@
 package shim
 
-import runc "github.com/crosbymichael/go-runc"
+import "github.com/crosbymichael/console"
 
 type process interface {
 	// Pid returns the pid for the process
 	Pid() int
 	// Resize resizes the process console
-	Resize(ws runc.WinSize) error
+	Resize(ws console.WinSize) error
 	// Exited sets the exit status for the process
 	Exited(status int)
 	// Status returns the exit status