v3.0.0

• This version improves DX by building alerts no matter if the first line ends with two spaces or not (the two spaces were mandatory before), but due to this ticket #4 I decided to make them optional, two spaces at the end are still a good pratice as it will speed up parsing, also installing remark-breaks next to this plugin is still highly recommended if you want to mimick githubs behavior regarding line breaks (inside of alerts)
• Improved documentation in main Readme regarding line breaks and paragraphs (regular markdown syntax or install remark-breaks to fully mimick GitHub behavioe)