Scully: Create better docs and update styles

[jorgeucano]

For support the web, we need update all the .MD files from the DOCS folder.

List:

• [ ] blog
• [ ] CODE_OF_CONDUCT
• [ ] getting-started
• [ ] getting-started_es
• [ ] issues
• [ ] learn
• [ ] plugins
• [ ] polyfills
• [ ] pre-requisites
• [ ] recommended-plugins
• [ ] release-for-v8
• [ ] scully
• [ ] scully-cmd-line
• [ ] scully-configuration
• [ ] scully-lib-core
• [ ] showcase
• [ ] utils

[jorgeucano]

@GuzmanPI is the person in charge of this.
Israel you can put some tips in case someone wants to collaborate.
@Villanuevand please talk with Israel for work together.

[geromegrignon]

I'll help if needed

[GuzmanPI]

Thx @geromegrignon I'll add the requirements for the docs to be considered as completed ASAP here, and then we can talk in Gitter for the details

[GuzmanPI]

Language requirenments:

• [ ] correct grammar both in English and Spanish
• [ ] formal language. In other words no slang, use the "you" pronoun

Style requirenments:

• [ ] Spaces between paragraphs, hedears, links and lists. Use 8px increments where 16px = 1rem
  Note: Ignore the space undeaneath the code card, becaus I will fix the the component. Hence, fixing all those spaces."

[jorgeucano]

@GuzmanPI Can you tell us about the progress?

[GuzmanPI]

Almost half of the docs are done, and I'll be done with the rest today. This are the finished files:

• [x] blog
• [x] CODE_OF_CONDUCT
• [x] getting-started
• [x] issues
• [x] learn
• [x] plugins
• [x] polyfills
• [x] pre-requisites
• [x] recommended-plugins
• [x] release-for-v8
• [x] scully
• [x] scully-cmd-line
• [x] scully-configuration
• [x] scully-lib-core
• [x] showcase
• [ ] utils

[GuzmanPI]

This issue can be closed since all docs have been rewritten. I forgot to add the issue to the merged PR.