Update README.md

Author: dwhitena

README.md

@@ -112,7 +112,7 @@ This project came out of the [Gopher Gala](http://gophergala.com/) 2016.  It is
   go get github.com/gophergala2016/gophernotes
   ```
   
-  if you get the error:
+  if you get this error:
   
   ```
   # pkg-config --cflags libzmq libzmq libzmq libzmq
@@ -150,12 +150,6 @@ This project came out of the [Gopher Gala](http://gophergala.com/) 2016.  It is
   }
   ```
 
-- You may need set the `PKG_CONFIG_PATH` environmental variable to the path containing `libzmq.pc`.  For example:
-
-  ```
-  export PKG_CONFIG_PATH=/usr/local/Cellar/zeromq22/2.2.0/lib/pkgconfig/
-  ```
-
 ## Getting Started
 
 - If you completed one of the local installs above (i.e., not the Docker install), start the jupyter notebook: