Move spec globals to spec eslintrc

.eslintrc

@@ -5,12 +5,6 @@ globals:
   every: true
   after: true
   constantly: true
-  expect: true
-  source: true
-  stub: true
-  spy: true
-  chai: true
-  sinon: true
 
 rules:
   camelcase: [2, {properties: "always"}]

spec/.eslintrc

@@ -1,6 +1,14 @@
 env:
   mocha: true
 
+globals:
+  expect: true
+  source: true
+  stub: true
+  spy: true
+  chai: true
+  sinon: true
+
 rules:
   no-unused-expressions: 0
   max-nested-callbacks: 0