Update composer.json
Update composer.json

Closes #29
daniel-mueller/humbug,torreytsui/humbug,daniel-mueller/humbug,padraic/humbug,mleko/humbug,JSchwehn/humbug,humbug/humbug,MakiCode/humbug,JSchwehn/humbug,eniuz/humbug,MakiCode/humbug,mleko/humbug,stof/humbug,eniuz/humbug,torreytsui/humbug,humbug/humbug,oswaldderiemaecker/humbug,padraic/humbug,oswaldderiemaecker/humbug