More details about PP7 file format

README.md

@@ -14,7 +14,7 @@
 |**7**         | 🚫        | 🚫          |
 
 ### About Version 7
-ProPresenter 7 has drastically changed the file format. Perviously the files were formatted in XML, which is super easy to parse and understand. Version 7 is now in a binary format, which is a bit more difficult to parse in the traditional way. Currently I am unfamiliar with parsing or building files in a binary format, so I am most certainly open to suggestions and PRs!
+ProPresenter 7 has drastically changed the file format. Perviously the files were formatted in XML, which is super easy to parse and understand. Version 7 is now in a binary format, which is a bit more difficult to parse in the traditional way. Currently I am unfamiliar with parsing or building files in a binary format, so I am most certainly open to suggestions and PRs! There are some very good blog posts about the ProPresenter 7 file format by [GreyShirtGuy](https://greyshirtguy.com/) and his efforts to extract data using C#: [Part 1](https://greyshirtguy.com/blog/pro7fileformat1/) and [Part 2](https://greyshirtguy.com/blog/propresenter-7-file-format-part-2/) | [Part 3](https://greyshirtguy.com/blog/propresenter-7-file-format-part-3/)
 
 For now though, unfortunately ProPresenter 7 files are not able to be parsed by this library. You can export presentations to plain text files _(File > Export > Text)_ to at least get your song lyrics out. If you need to convert these plain text files to other formats you can try using my LyricConverter project: [LyricConverter.net](http://lyricconverter.net) | [LyricConverter Github](https://github.com/FiniteLooper/LyricConverter/)