Fixes facebook#1509 -- Add note about side-specific properties on Tex…

…tInput

Summary:Add note about side-specific properties not being applied to `TextInput`s if `multiline=false`.

Fix formatting of docs describing other `multiline={true/false}` quirks.
Closes facebook#2240

Differential Revision: D3037154

Pulled By: andreicoman11

fb-gh-sync-id: d64db906c2ab0054f2357b8e218725414d9868d6
shipit-source-id: d64db906c2ab0054f2357b8e218725414d9868d6

Libraries/Components/TextInput/TextInput.js

@@ -68,7 +68,17 @@ type Event = Object;
  *   />
  * ```
  *
- * Note that some props are only available with `multiline={true/false}`:
+ * Note that some props are only available with `multiline={true/false}`.
+ * Additionally, border styles that apply to only one side of the element
+ * (e.g., `borderBottomColor`, `borderLeftWidth`, etc.) will not be applied if
+ * `multiline=false`. To achieve the same effect, you can wrap your `TextInput`
+ * in a `View`:
+ *
+ * ```
+ *  <View style={{ borderBottomColor: '#000000', borderBottomWidth: 1, }}>
+ *    <TextInput {...props} />
+ *  </View>
+ * ```
  */
 var TextInput = React.createClass({
   statics: {