Merge pull request coinbase#18 from pzagor2/master

Update feed tutorial run command documentation

docs/pages/gtt/gtt_installation.md

@@ -21,7 +21,7 @@ node.js and don't want to, or can't switch to Typescript, then that's not a prob
 In either case, you can install the GTT by executing 
 
     yarn add gdax-trading-toolkit
-    // or if you're using npm
+    // or if you're using npm (Use yarn if you plan on running examples from /tutorials folder)
     npm i gdax-trading-toolkit
 
 (we're using [Yarn](https://yarnpkg.com/) here, which is essentially a 1:1 drop-in replacement for npm with a whole host 

docs/pages/gtt_tutorials/gtt_tutorials_feed.md

@@ -151,7 +151,7 @@ This is pretty straightforward. After setting up the tally variables, we
         process.exit(1);
     });
 
-THe `printTallies` function is just a bit of string-fu:
+The `printTallies` function is just a bit of string-fu:
 
     function printTallies() {
         console.log(`${count} messages received`);
@@ -167,7 +167,7 @@ THe `printTallies` function is just a bit of string-fu:
 If you've skipped ahead, or want to see the finished product, the full script resides at `/tutorials/t001_feeds.ts`.
  Execute it with
 
-    $ ts-node src/tutorials/t001_feeds.ts
+    $ ts-node tutorials/t001_feeds.ts
 
 {% include tip.html content="`ts-node` is a useful utility that compiles and runs Typescript code directly. Install it with `npm -g ts-node typescript`" %}