Update README.md

[AdrielBento]

• Fix Travis url badge
• Add new badges
• Add table of contents
• Change TODO to Features
• Remove sponsor section

[AdrielBento]

Is this sponsorship still going on? If not, I think it makes more sense to remove that section.

[polvalente]

I'm not sure. I think @tony612 is the best person to answer this

[tony612]

It's okay to remove this.

[AdrielBento]

Given that all the items on the list are done, I think it makes more sense to turn this section into a list of implemented features.

[polvalente]

I would remove this section altogether instead.
Or add a less itemized version in its place

[AdrielBento]

add a less itemized version in its place

I agree with you. What kind of items can we keep or what features are important to mention in the documentation? @polvalente

[sleipnir]

add a less itemized version in its place

I agree with you. What kind of items can we keep or what features are important to mention in the documentation? @polvalente

Supported request types (unary, stream in, stream out, bid stream), encoding types (grpc+web, grpc. etc), transport types (uds, tcp, tls), grpc reflection (in progress) , http transcoding... I think are important things

[polvalente]

I wouldn't add anything that's still in progress. Otherwise, I agree with @sleipnir

[sleipnir]

I wouldn't add anything that's still in progress. Otherwise, I agree with @sleipnir

It was not my intention to say to put whatever is in progress. Just present an overview of what are the interesting features of any grpc library.