Add iA Writer Mono

src/assets/fonts/iAWriterMono/iAWriterMono.css

@@ -0,0 +1,7 @@
+@font-face {
+  font-family: 'iA Writer Mono';
+  src: url('iAWriterMonoS-Regular.woff2') format('woff2'),
+    url('iAWriterMonoS-Regular.woff') format('woff');
+  font-weight: normal;
+  font-style: normal;
+}

src/fonts/ia-writer-mono.md

@@ -0,0 +1,20 @@
+---
+title: iA Writer Mono
+designers:
+  - name: iA Writer
+home_url: https://github.com/iaolo/iA-Fonts/tree/master/iA%20Writer%20Mono
+license:
+  - name: SIL Open Font License v1.10
+    url: https://github.com/iaolo/iA-Fonts/blob/master/iA%20Writer%20Mono/LICENSE.md
+cost: free
+italics: true
+ligatures: false
+variable: true
+stylesheet_url: iAWriterMono/iAWriterMono.css 
+---
+
+This is a modification of IBM's Plex font.
+
+iA Writer Duo comes bundled with iA Writer for Mac and iOS.
+
+For in depth explanation of iA Writer Mono, Duo, and Quattro please read the [blog entry on Duospace](http://ia.net/topics/in-search-of-the-perfect-writing-font/) and on [iA Writer Mono, Duo, and Quattro](https://ia.net/writer/blog/a-typographic-christmas)