Update README to reflect inclusion of library in Arduino Library Manager

Author: NT7S

README.md

@@ -10,9 +10,9 @@ This library has been written for the Arduino platform and has been successfully
 
 How To Install
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-Include the JTEncode library into your instance of the Arduino IDE. Download a ZIP file of the library from the GitHub repository by using the "Download ZIP" button at the right of the main repository page. Extract the ZIP file, then rename the unzipped folder as "JTEncode". Finally, open the Arduino IDE, select menu Sketch > Import Library... > Add Library..., and select the renamed folder that you just downloaded. Restart the IDE and you should have access to the new library.
+The best way to install the library is via the Arduino Library Manager, which is available if you are using Arduino IDE version 1.6.2 or greater. To install it this way, simply go to the menu Sketch > Include Library > Manage Libraries..., and then in the search box at the upper-right, type "Etherkit JTEncode". Click on the entry in the list below, then click on the provided "Install" button. By installing the library this way, you will always have notifications of future library updates, and can easily switch between library versions.
 
-(Yes, the Arduino IDE can import a ZIP file, but it doesn't like filenames with characters such as dashes, as GitHub does when it appends the branch name with a dash. Perhaps there's an elegant way around this, we'll see.)
+If you need to or would like to install the library in the old way, then you can download a copy of the library in a ZIP file. Download a ZIP file of the library from the GitHub repository by going to [this page](https://github.com/etherkit/JTEncode/releases) and clicking the "Source code (zip)" link under the latest release. Finally, open the Arduino IDE, select menu Sketch > Import Library... > Add Library..., and select the ZIP that you just downloaded.
 
 Example
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