Create a dynamic provider features matrix (#201)

* adding simple provider feature matrix generator

* filling out matrix

* clean output

* dead code

* explanatory text

* explanatory text

* typo

* move stuff around

* clean

* editing

providers/namecheap/namecheap.go

@@ -16,8 +16,13 @@ type Namecheap struct {
 	client  *nc.Client
 }
 
+var docNotes = providers.DocumentationNotes{
+	providers.DocCreateDomains:       providers.Cannot("Requires domain registered through their service"),
+	providers.DocOfficiallySupported: providers.Cannot(),
+}
+
 func init() {
-	providers.RegisterRegistrarType("NAMECHEAP", newReg)
+	providers.RegisterRegistrarType("NAMECHEAP", newReg, docNotes)
 	// NOTE(tlim): If in the future the DNS Service Provider is implemented,
 	// most likely it will require providers.CantUseNOPURGE.
 }