adding contributing file

steps were needed for my hot new open source project to instruct people
how to help
Personal note from celso
Changed personal file to celso-silva-note
Changed personal file to celso-silva-note
Adding MIT license
Merge remote-tracking branch 'origin/adding-license' into file-editing-practice
rename of license to add md extention
Merge pull request #2 from megatron3000/file-editing-practice

File editing practice