`put-object` should set correct content-type about s3-credentials HOT 5 CLOSED

I can guess the type from the file extension using mimetypes: https://docs.python.org/3/library/mimetypes.html#mimetypes.guess_type

from s3-credentials.

But for reading from stdin I will let the user set --content-type something instead.

from s3-credentials.

Prototype worked:

echo "<h1>Hello world" | \
  s3-credentials put-object simonwillison-public-bucket \
    -a public-bucket-creds.json hello.html - \
    --content-type text/html

http://s3.amazonaws.com/simonwillison-public-bucket/hello.html

This is for a bucket created using the new experimental --public-bucket option from:

• #42

from s3-credentials.

I wrote an integration test for #42 which also covers this.

from s3-credentials.

Added tests in 6e0a2c2

from s3-credentials.