Include some mention of --skip-column-names

Author: danielbachhuber

README.md

@@ -342,6 +342,10 @@ wp db query [<sql>] [--dbuser=<value>] [--dbpass=<value>] [--<field>=<value>] [-
 Executes an arbitrary SQL query using `DB_HOST`, `DB_NAME`, `DB_USER`
  and `DB_PASSWORD` database credentials specified in wp-config.php.
 
+Use the `--skip-column-names` MySQL argument to exclude the headers
+from a SELECT query. Pipe the output to remove the ASCII table
+entirely.
+
 **OPTIONS**
 
 	[<sql>]

src/DB_Command.php

@@ -401,6 +401,10 @@ public function cli( $_, $assoc_args ) {
 	 * Executes an arbitrary SQL query using `DB_HOST`, `DB_NAME`, `DB_USER`
 	 *  and `DB_PASSWORD` database credentials specified in wp-config.php.
 	 *
+	 * Use the `--skip-column-names` MySQL argument to exclude the headers
+	 * from a SELECT query. Pipe the output to remove the ASCII table
+	 * entirely.
+	 *
 	 * ## OPTIONS
 	 *
 	 * [<sql>]