up deps and fix docs

Author: make-github-pseudonymous-again

doc/manual/example.md

@@ -1,3 +1,5 @@
+# Example
+
 ```js
 /**
  * Initialization with complex numbers in double precision.

doc/manual/installation.md

@@ -1,3 +1,5 @@
+# Installation
+
 Can be managed using
 [jspm](http://jspm.io)
 or [npm](https://github.com/npm/npm).

doc/manual/usage.md

@@ -1,3 +1,5 @@
+# Usage
+
 The code needs a ES2015+ polyfill to work, for example
 [babel-polyfill](https://babeljs.io/docs/usage/polyfill).
 ```js