Simplify "Use searchable names" example (ryanmcdermott#121)

* Simplify "Use searchable names" example

There is no need to create an arrow function to execute a function inside of the timeout.

* Remove `this` to avoid context problems

Author: mitogh

README.md

@@ -80,9 +80,7 @@ can help identify unnamed constants.
 **Bad:**
 ```javascript
 // What the heck is 86400000 for?
-setTimeout(() => {
-  this.blastOff();
-}, 86400000);
+setTimeout(blastOff, 86400000);
 
 ```
 
@@ -91,9 +89,7 @@ setTimeout(() => {
 // Declare them as capitalized `const` globals.
 const MILLISECONDS_IN_A_DAY = 86400000;
 
-setTimeout(() => {
-  this.blastOff();
-}, MILLISECONDS_IN_A_DAY);
+setTimeout(blastOff, MILLISECONDS_IN_A_DAY);
 
 ```
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