adjust readme formatting

Author: ntbosscher

README.md

@@ -5,18 +5,18 @@ This CLI script will crawl a given url for any path that resolves within the giv
 ## Usage
 
 ```
-	php crawl.php <url> <optional:output-dir>
+php crawl.php <url> <optional:output-dir>
 ```
 
 ## Examples
 
 ```
-	php crawl.php http://www.foo.com
+php crawl.php http://www.foo.com
 
-	php crawl.php http://www.foo.com ~/websites/foo.com
+php crawl.php http://www.foo.com ~/websites/foo.com
 
-	php crawl.php http://www.foo.com/some-sub-dir/
-	# will only download files within /some-sub-dir
+php crawl.php http://www.foo.com/some-sub-dir/
+# will only download files within /some-sub-dir
 ```
 
 ## Tests
@@ -25,5 +25,5 @@ Selected tests can be run using the following:
 Note: this has very little code coverage, only used for some basic functions.
 
 ```
-	php test/test.php
+php test/test.php
 ```