Fixed the errors within the IRremote2.h and IRremote2.cpp files

[shermannatrix-old]

Hi guys, I thought I should share this. So you can take note of the issues when you are downloading the code for your projects. When you try to run the project, you will receive a number of errors:

1. There is a single line in one of the Block comments in IRremote2.cpp that is missing the '/' at the beginning of the line. Remember to add that in.

2. For the void sendHvacToshiba() method, it should be void IRsend::sendHvacToshiba(...).

3. Make sure to also add the method to the .h file as well. Otherwise, you will keep seeing an error saying that make() and space() methods are not declared.

To the creators of the library, please fix that.