Update installation instructions
Update installation instructions

- Make them more clear to avoid any possible misunderstandings due to
differet version requirements

jjaner/essentia-musicbricks,MTG/essentia,jjaner/essentia-musicbricks,arseneyr/essentia,carthach/essentia,carthach/essentia,MTG/essentia,arseneyr/essentia,arseneyr/essentia,MTG/essentia,jjaner/essentia-musicbricks,jjaner/essentia-musicbricks,carthach/essentia,jjaner/essentia-musicbricks,arseneyr/essentia,arseneyr/essentia,MTG/essentia,MTG/essentia,carthach/essentia,carthach/essentia