ErrMachineNotExist msg: Fix grammar, more helpful

msabramo · msabramo · commit d970599fe6ce · 2015-02-11T17:53:10.000-08:00
This adds the word "does" to make it sound nicer and it also asks if the
user ran `boot2docker init`.
diff --git a/driver/driver.go b/driver/driver.go
@@ -52,7 +52,7 @@ var (
 	machines map[string]InitFunc
 
 	ErrNotSupported    = errors.New("driver not supported")
-	ErrMachineNotExist = errors.New("machine not exist")
+	ErrMachineNotExist = errors.New("machine does not exist (Did you run `boot2docker init`?)")
 	ErrMachineExist    = errors.New("machine already exists")
 	ErrPrerequisites   = errors.New("prerequisites for machine not satisfied (hypervisor installed?)")
 )

Original file line number	Diff line number	Diff line change
`@@ -52,7 +52,7 @@ var (`
`52`	`52`	`machines map[string]InitFunc`
`53`	`53`
`54`	`54`	`ErrNotSupported = errors.New("driver not supported")`
`55`		`- ErrMachineNotExist = errors.New("machine not exist")`
	`55`	+ ErrMachineNotExist = errors.New("machine does not exist (Did you run `boot2docker init`?)")
`56`	`56`	`ErrMachineExist = errors.New("machine already exists")`
`57`	`57`	`ErrPrerequisites = errors.New("prerequisites for machine not satisfied (hypervisor installed?)")`
`58`	`58`	`)`