doc: ported and updated old doc for Array#uniq
doc: ported and updated old doc for Array#uniq

lamsieuquay/prototype,Jiasm/prototype,sdumitriu/prototype,Gargaj/prototype,loduis/prototype,loduis/prototype,erpframework/prototype,erpframework/prototype,sstephenson/prototype,ShefronYudy/prototype,292388900/prototype,loduis/prototype,leafo/prototype,ridixcr/prototype,sdumitriu/prototype,ldf7801528/prototype,sstephenson/prototype,lamsieuquay/prototype,ldf7801528/prototype,fashionsun/prototype,292388900/prototype,292388900/prototype,ldf7801528/prototype,lamsieuquay/prototype,Jiasm/prototype,ridixcr/prototype,ridixcr/prototype,ShefronYudy/prototype,leafo/prototype,Gargaj/prototype,erpframework/prototype,Jiasm/prototype,baiyanghese/prototype,Gargaj/prototype,fashionsun/prototype,sdumitriu/prototype,ShefronYudy/prototype,fashionsun/prototype,baiyanghese/prototype,sstephenson/prototype