Tweak simpify README [skip ci]

packages/babel-plugin-minify-simplify/README.md

@@ -1,10 +1,13 @@
 # babel-plugin-minify-simplify
 
-This plugin will transform code in mainly two ways:
+> Simplifies code for minification by reducing statements into expressions and making expressions and uniform where possible.
 
-1. Reduce as much statements as possible into expressions
+## Example
+
+### Reduce statement into expression
 
 **In**
+
 ```js
 function foo() {
   if (x) a();
@@ -16,6 +19,7 @@ function foo2() {
 ```
 
 **Out**
+
 ```js
 function foo() {
   x && a();
@@ -25,16 +29,18 @@ function foo2() {
 }
 ```
 
-2. Make expressions as uniform as possible for better compressibility
+### Make expression as uniform as possible for better compressibility
 
 **In**
+
 ```js
 undefined
 foo['bar']
 Number(foo)
 ```
 
 **Out**
+
 ```js
 void 0
 foo.bar