doc: add more shell examples to the readme

Author: zeke

readme.md

@@ -25,11 +25,45 @@ There's a CLI that prints all words to STDOUT. Install it globally:
 
 ```sh
 npm i -g an-array-of-english-words
+```
+
+Run `words` to print all the words to stdout:
+
+```sh
+words
+```
+
+Use `grep` to filter by pattern:
+
+```
 words | grep cheese
 ```
 
+Use `egrep` to filter with regular expressions:
+
+```sh
+words | egrep '^fun'            # start with 'fun'
+words | egrep 'ification$'      # end with 'ification'
+words | egrep 'ou?r$'           # end in 'or' or 'our'
+```
+
+Use `wc` to find out how many `monkey` words there are:
+
+```sh
+words | grep monkey | wc -l
+```
+
+Ten random ten-letter words:
+
+```sh
+$ words | egrep '^.{10}$' | gshuf | head -10
+```
+
+Note: On macOS, `brew install coreutils` to get 
+[`gshuf`](https://en.wikipedia.org/wiki/Shuf) and other goodies.
+
 ## See Also
 
-- [similar-english-words](http://ghub.io/similar-english-words)
-- [an-array-of-spanish-words](https://github.com/zeke/an-array-of-spanish-words)
-- [an-array-of-french-words](https://github.com/zeke/an-array-of-french-words)
+- [similar-english-words](https://github.com/words/similar-english-words)
+- [an-array-of-spanish-words](https://github.com/words/an-array-of-spanish-words)
+- [an-array-of-french-words](https://github.com/words/an-array-of-french-words)