readme: move install section up

README.md

@@ -41,6 +41,30 @@ nums = [x for x in range(10)]
 **Note:** Plugin does not validate any input, so you should validate the attributes in your html output if security is a concern.
 
 
+## Install
+
+```
+$ npm install --save markdown-it-attrs
+```
+
+
+## Usage
+
+```js
+var md = require('markdown-it')();
+var markdownItAttrs = require('markdown-it-attrs');
+
+md.use(markdownItAttrs);
+
+var src = '# header {.green #id}\nsome text {with=attrs and="attrs with space"}';
+var res = md.render(src);
+
+console.log(res);
+```
+
+[demo as jsfiddle](https://jsfiddle.net/arve0/hwy17omn/)
+
+
 ## Ambiguity
 When class can be applied to both inline or block element, inline element will take precedence:
 ```md
@@ -117,30 +141,6 @@ Which is not what you might expect. [Suggestions are welcome](https://github.com
 If you need finer control, look into [decorate](https://github.com/rstacruz/markdown-it-decorate).
 
 
-## Install
-
-```
-$ npm install --save markdown-it-attrs
-```
-
-
-## Usage
-
-```js
-var md = require('markdown-it')();
-var markdownItAttrs = require('markdown-it-attrs');
-
-md.use(markdownItAttrs);
-
-var src = '# header {.green #id}\nsome text {with=attrs and="attrs with space"}';
-var res = md.render(src);
-
-console.log(res);
-```
-
-[demo as jsfiddle](https://jsfiddle.net/arve0/hwy17omn/)
-
-
 ## Custom blocks
 `markdown-it-attrs` will add attributes to any `token.block == true` with {}-curlies in end of `token.info`. For example, see [markdown-it/rules_block/fence.js](https://github.com/markdown-it/markdown-it/blob/760050edcb7607f70a855c97a087ad287b653d61/lib/rules_block/fence.js#L85) which [stores text after the three backticks in fenced code blocks to `token.info`](https://markdown-it.github.io/#md3=%7B%22source%22%3A%22%60%60%60js%20%7B.red%7D%5Cnfunction%20%28%29%20%7B%7D%5Cn%60%60%60%22%2C%22defaults%22%3A%7B%22html%22%3Afalse%2C%22xhtmlOut%22%3Afalse%2C%22breaks%22%3Afalse%2C%22langPrefix%22%3A%22language-%22%2C%22linkify%22%3Atrue%2C%22typographer%22%3Atrue%2C%22_highlight%22%3Atrue%2C%22_strict%22%3Afalse%2C%22_view%22%3A%22debug%22%7D%7D).