Update deps (#22)

Author: gucong3000

README.md

@@ -68,6 +68,6 @@ const Component1 = glm.a({
 
 See: [postcss-syntax](https://github.com/gucong3000/postcss-syntax)
 
-### Style Transformations
+## Style Transformations
 
 The main use case of this plugin is to apply PostCSS transformations to CSS code in template literals & styles as object literals.

package.json

@@ -41,26 +41,26 @@
     "test": "nyc mocha --no-timeouts"
   },
   "dependencies": {
-    "@babel/generator": "^7.0.0-beta.49",
-    "@babel/parser": "^7.0.0-beta.49",
-    "@babel/traverse": "^7.0.0-beta.49",
-    "@babel/types": "^7.0.0-beta.49",
+    "@babel/generator": "^7.0.0-beta.54",
+    "@babel/parser": "^7.0.0-beta.54",
+    "@babel/traverse": "^7.0.0-beta.54",
+    "@babel/types": "^7.0.0-beta.54",
     "postcss-styled": ">=0.31.0"
   },
   "peerDependencies": {
     "postcss": ">=5.0.0",
     "postcss-syntax": ">=0.31.0"
   },
   "devDependencies": {
-    "autoprefixer": "^8.6.4",
+    "autoprefixer": "^9.0.0",
     "chai": "^4.1.2",
-    "codecov": "^3.0.2",
+    "codecov": "^3.0.4",
     "json5": "^1.0.1",
     "mocha": "^5.2.0",
     "nyc": "^12.0.2",
-    "postcss": "^6.0.23",
+    "postcss": "^7.0.0",
     "postcss-parser-tests": "^6.3.0",
-    "postcss-safe-parser": "^3.0.1",
+    "postcss-safe-parser": "^4.0.1",
     "postcss-syntax": ">=0.31.0"
   }
 }