README.md: Add Linux installation notes

sbrl · web-flow · commit 061f7e4d09b6 · 2019-05-17T17:28:58.000+01:00
diff --git a/README.md b/README.md
@@ -98,6 +98,7 @@ NOTE: documentation is slightly out of date for the upcoming release of v2.  We
 * [License](#license)
 
 ## Installation
+On Linux, ensure you have the correct header files installed: `sudo apt install mesa-common-dev libxi-dev` (adjust for your distribution)
 
 ### npm
 
