Cover scope name

Author: sergeysova

lib/index.js

@@ -29,7 +29,7 @@ class Maker {
     if (typeof name !== 'string') {
       throw new Error('Name of the scope should be string!')
     }
-    if (name.indexOf('/') !== -1) {
+    if (name.length === 0 || name.indexOf('/') !== -1) {
       throw new Error('Name of the scope should be a word')
     }
 

lib/index.test.js

@@ -207,6 +207,11 @@ test('Fail for wrong scope name', t => {
       r.scope(null, () => {})
     })
   })
+  t.throws(() => {
+    createRest(r => {
+      r.scope('/', () => {})
+    })
+  })
 })
 
 test('Fail if passed deep path to method', t => {