button: block description
Merge pull request #467 from bem/issues/429@v2

button: block description. Closes#429
button: description + fix typo
Merge pull request #490 from bem/issues/429@v2-a

button: description + fix typo
attach: block description
Merge pull request #468 from bem/issues/431@v2

attach: block description
There is no closing tag
input: block description. Closes #432
errata
Merge branch 'gela-d.rights-to-docs' into v2
Merge pull request #469 from bem/issues/432@v2

input block description
errata
Merge branch 'gela-d.errata' into v2
menu block description