Bump version to 2.1.5.
Bump version to 2.1.5.

saizai/money,envato/money,BrandyMint/money,richardvenneman/money,bonusly/money,AlexVPopov/money,insphire/money,RubyMoney/money,nilbus/money,printercu/money,antstorm/money,kewaunited/money,bnmrrs/money,paulodiniz/money,maicoin/money,gregoryhappyfresh/money,pixeltrix/money