[nop] Update README

README.md

@@ -23,22 +23,22 @@ See [here][GitHub releases] for earlier releases.
 ## Why Tempel?
 
 - **Easy-to-use, high-level API** focused on [common tasks](../../wiki/2-Examples) like logins, encryption, signing, etc.
-- **Reasonable defaults** including choice of algorithms and work factors
-- **Future-proof data formats** with auto-updated algorithms and work factors over time
-- Support for [⧉ symmetric](https://en.wikipedia.org/wiki/Symmetric-key_algorithm), [⧉ asymmetric](https://en.wikipedia.org/wiki/Public-key_cryptography) (public-key), and [⧉ end-to-end](https://en.wikipedia.org/wiki/End-to-end_encryption) (E2EE) encryption
-- Automatic [⧉ scrypt](https://en.wikipedia.org/wiki/Scrypt) and [⧉ pbkdf2](https://en.wikipedia.org/wiki/PBKDF2) support for easy **password-based key stretching**
+- **Reasonable defaults** including choice of algorithms and work factors.
+- **Future-proof data formats** with auto-updated algorithms and work factors over time.
+- Support for [⧉ symmetric](https://en.wikipedia.org/wiki/Symmetric-key_algorithm), [⧉ asymmetric](https://en.wikipedia.org/wiki/Public-key_cryptography) (public-key), and [⧉ end-to-end](https://en.wikipedia.org/wiki/End-to-end_encryption) (E2EE) encryption.
+- Automatic [⧉ scrypt](https://en.wikipedia.org/wiki/Scrypt) and [⧉ pbkdf2](https://en.wikipedia.org/wiki/PBKDF2) support for easy **password-based key stretching**.
 - Simple **key management API** for password resets, key rotations, etc.
-- Beginner-oriented [documentation](#documentation) and docstrings
-- **Comprehensive test suite** with >60k unit tests
+- Extensive beginner-oriented [documentation](#documentation) and docstrings.
+- **Comprehensive test suite** with >60k unit tests.
 
-Note that Tempel is [not intended](../../wiki/3-Faq#can-i-decrypt-tempel-data-with-other-tools) for interop with other cryptographic tools/APIs.
+Note that Tempel is [not intended](../../wiki/3-Faq#can-i-decrypt-tempel-data-with-other-tools) for interop with other cryptographic tools/APIs!
 
 ## Video demo
 
-See for  intro and usage:
+See for intro and usage:
 
 <a href="https://www.youtube.com/watch?v=sULZVFhR848" target="_blank">
- <img src="https://img.youtube.com/vi/sULZVFhR848/maxresdefault.jpg" alt="Tempel demo video" width="640" border="0" />
+ <img src="https://img.youtube.com/vi/sULZVFhR848/maxresdefault.jpg" alt="Tempel demo video" width="480" border="0" />
 </a>
 
 ## Documentation