Cleanup for 4.6.0 release

* Update dependencies.
* Regenerate css
* Update readme to latest version

css/tachyons.css

@@ -1,4 +1,4 @@
-/*! TACHYONS v4.5.5 | http://tachyons.io */
+/*! TACHYONS v4.6.0 | http://tachyons.io */
 /*
  *
  *      ________            ______

package.json

@@ -1,6 +1,6 @@
 {
   "name": "tachyons",
-  "version": "4.7.0",
+  "version": "4.6.0",
   "description": "Functional CSS for humans",
   "author": "mrmrs",
   "style": "css/tachyons.min.css",
@@ -24,9 +24,8 @@
     "copy-files": "^0.1.0",
     "immutable-css-cli": "^1.1.1",
     "normalize.css": "^4.2.0",
-    "tachyons-cli": "^1.0.8",
-    "tachyons-modules": "^1.1.8",
-    "watch": "^0.19.2"
+    "tachyons-cli": "^1.0.10",
+    "tachyons-modules": "^1.1.8"
   },
   "contributors": [
     {
@@ -45,5 +44,8 @@
     "build:css": "tachyons src/tachyons.css > css/tachyons.css",
     "build:minify": "tachyons src/tachyons.css -m > css/tachyons.min.css",
     "build:watch": "watch 'npm run build' ./src/"
+  },
+  "dependencies": {
+    "watch": "^1.0.1"
   }
 }

readme.md

@@ -41,15 +41,15 @@ The modules are generally pretty small and thus quick and easy to read.
 The quickest and easiest way to start using tachyons is to include a reference
 to the minified file in the head of your html file.
 
-Currently the latest version is 4.5.4
-```html
-<link rel="stylesheet" href="https://unpkg.com/tachyons@4.5.4/css/tachyons.min.css">
-```
-
 You can always grab the latest version with
 ```html
 <link rel="stylesheet" href="https://unpkg.com/tachyons/css/tachyons.min.css">
 ```
+You can also specify a specific version. The latest version is 4.6.0
+```html
+<link rel="stylesheet" href="https://unpkg.com/tachyons@4.6.0/css/tachyons.min.css">
+```
+
 
 ### Local Setup
 

src/tachyons.css

@@ -1,4 +1,4 @@
-/*! TACHYONS v4.5.5 | http://tachyons.io */
+/*! TACHYONS v4.6.0 | http://tachyons.io */
 
 /*
  *