Update README.md

Author: Tw1sm

README.md

@@ -39,6 +39,7 @@ links                [NORM] Enumerate linked servers [I,L]
 olecmd               [PRIV] Execute a system command using OLE automation procedures [I,L]
 query                [NORM] Execute a custom SQL query [I,L]
 rows                 [NORM] Get the count of rows in a table [I,L]
+sample               [NORM] Query a sample of table data [I,L]   
 search               [NORM] Search a table for a column name [I,L]
 smb                  [NORM] Coerce NetNTLM auth via xp_dirtree [I,L]
 tables               [NORM] Enumerate tables within a database [I,L]