Readme typo fix

Author: nikitaeverywhere

readme.md

@@ -136,7 +136,7 @@ The next table demonstrates available API. Left column are `terminal` object pro
 	<tr>
         <td>onUserInput(<b>cb</b>)</td>
         <td>
-            <b>cb</b>(<u>text</u>, <u>mode</u>) is fired right after user press enter. Argument
+            <b>cb</b>(<u>text</u>, <u>mode</u>) is fired right after user presses enter. Argument
             <code>text</code> is a <code>String</code> of user input, and
             <code>mode</code> is a <code>Number</code>, which can be compared
             with one of the terminal mode constants, such as <code>MODE_PROMPT</code>.