Added 3 Ottawa Canada locations to the list

Author: jclarkin

README.md

@@ -9,6 +9,7 @@
 - [Canada](#canada)
   - [Halton Region](#halton-region)
   - [Montreal](#montreal)
+  - [Ottawa](#ottawa)
   - [Toronto](#toronto)
   - [Vancouver](#vancouver)
 - [United States](#united-states)
@@ -99,6 +100,11 @@
 - [Halte 24-7 - Coworking Montréal](http://halte24-7.com/) - 4284 Rue de la Roche
 - [6cent1](http://www.6cent1.com/) - 400 Avenue Atlantic #601
 
+### Ottawa
+- [Impact Hub](https://ottawa.impacthub.net/) - 123 Slater St, 6th Floor
+- [MakerSpace North](http://www.makerspacenorth.com/) - 250 City Centre Ave #21
+- [TheCodeFactory](https://thecodefactory.ca/) - 100 Gloucester St
+
 ### Vancouver
 - [Hive](http://www.hivevancouver.com/) - 128 W Hastings St #210
 - [The Profile-Vancouver](http://theprofile.ca/) - The Landing, 375 Water St #200