Merge pull request #109 from guillermooo/build-systems

split lines
add backers list
Merge pull request #107 from guillermooo/backers-list

add list of backers
edit README
Merge pull request #108 from guillermooo/add-bs-donation-link

edit README
add 'backers' section
Merge pull request #112 from guillermooo/backers-list-2

add 'backers' section
edit build system ref topic
edit