Merge pull request devopsdays#301 from devopsdays/bridget-document-ul…

…imit

ulimit, ugh.

Former-commit-id: 1a90ecb

README.md

@@ -14,7 +14,27 @@ If you'd like to edit a specific devopsdays event site (and/or contribute code),
 ### Setup
 1. Install [Hugo v0.15+](http://gohugo.io)
 1. Fork this repo
+
+### View site locally
 1. To watch for changes and rebuild on the fly, open a new terminal, cd to your fork of the repo, and enter this command: `hugo server -w --baseUrl="http://localhost:1313"`
+1. OS X has low ulimits, so you may see this message:
+```
+hugo server -w --baseUrl="http://localhost:1313”
+[...]
+Error: listen tcp 127.0.0.1:1313: socket: too many open files
+```
+
+You can correct it with this:
+```
+ $  hugo check ulimit
+ $  sudo sysctl -w kern.maxfiles=65536
+ $  sudo sysctl -w kern.maxfilesperproc=65536
+ $  ulimit -n 65536 65536
+```
+Then in a new window:
+```
+ $  hugo server -w --baseUrl="http://localhost:1313"
+```
 
 ### Contribute changes
 1. Code changes that affect the overall site will be reviewed only if they are in a separate pull request from any event-specific content. tl;dr: don't add "giant template change" in the same PR as "here are some more sponsors". If it affects anything other than your event, it should be in its own PR.