Update Readme with Device Display Information

[mattregul]

Description of Change

1. Added link to Current Features for Device Display Information
2. Swapped Email and File System Helpers in the feature list (alphabetical)

Bug Fixed

• Related to issue README.md missing link to "Device Display Information" #267

API Changes

None

Behavioral Changes

None

PR Checklist

• Has tests (if omitted, state reason in description)
• Has samples (if omitted, state reason in description)
• Rebased on top of master at time of PR
• Changes adhere to coding standard
• Updated documentation (see walkthrough)

[dend]

✅ Validation status: passed

File	Status	Preview URL	Details
README.md	✅Succeeded

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.

[dend]

✅ Validation status: passed

File	Status	Preview URL	Details
README.md	✅Succeeded

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.

[mattleibow]

build

[mattleibow]

Thanks for the PR! You are now a fully fledged contributor to Xamarin.Essentials!