fix #1 support chai 4.0

CHANGELOG.md

@@ -0,0 +1,2 @@
+## 4.0.0
+- update to chai 4.0

README.md

@@ -5,6 +5,7 @@
 
 chai with sinon-chai, dirty-chai, sinon-as-promised with mixed features
 
+Now supports Chai 4.x
 
 ## Install
 ```
@@ -345,3 +346,5 @@ const testspy = sinon.spy();
       expect(spy).to.always.have.been.calledWithNew();
     });
 ```
+
+you still can use Chai 3.x with ultimate-chai 3.x

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ultimate-chai",
-  "version": "3.1.0",
+  "version": "4.0.0",
   "description": "ultimate chai library you'll ever need with cross mixture of sinon-chai, dirty-chai, chai-as-promised included",
   "main": "index.js",
   "scripts": {
@@ -27,14 +27,14 @@
   },
   "homepage": "https://github.com/svenkatreddy/ultimate-chai#readme",
   "dependencies": {
-    "chai": "^3.5.0",
-    "chai-as-promised": "^6.0.0",
-    "dirty-chai": "^1.2.2",
+    "chai": "^4.0.2",
+    "chai-as-promised": "^7.0.0",
+    "dirty-chai": "^2.0.0",
     "sinon": "^2.1.0",
-    "sinon-chai": "^2.9.0"
+    "sinon-chai": "^2.11.0"
   },
   "devDependencies": {
-    "mocha": "^3.2.0",
-    "sinon": "^2.1.0"
+    "mocha": "^3.4.2",
+    "sinon": "^2.3.4"
   }
 }