Update for 7th challenge

Author: cosmycoder

7-defi-devpost/.gitignore

@@ -3,11 +3,16 @@ Compete with other Scrypto devs and claim your place among the Scrypto champions
 
 [![Piers Ridyard message to Scryptonauts](https://img.youtube.com/vi/NlxYI3MVI3Y/0.jpg)](https://www.youtube.com/watch?v=NlxYI3MVI3Y)
 
+## Current Challenge: DeFi with DevPost
+Starting today, you have 5 weeks to come up with a Scrypto blueprint with DeFi functionality. All previous Scrypto challenges had a very specific subject. We saw challenges around decentralized exchanges, lending and DAOs for example. This time around, the subject is broader. We are simply asking you to build a Scrypto blueprint borrowing features from the traditional financial system or a blueprint implementing novel ideas that are not even possible in tradfi. Also, you can team up with others or work independently. Whatever your preference is, we encourage you to participate.
+
+Read More about the DeFi challenge in [the announcement blog post](https://www.radixdlt.com/blog/the-scrypto-defi-challenge-starts-now).
+
 ## How to submit your entry
 1. [Install](https://docs-babylon.radixdlt.com/main/getting-started-developers/first-component/install-scrypto.html) or [update](https://docs-babylon.radixdlt.com/main/getting-started-developers/first-component/updating-scrypto.html) the Scrypto toolchain
 2. Fork this repository
 3. Clone the forked repository on your local environment
-4. Start a new scrypto project with `scrypto new-package [name]` inside the current challenge directory
+4. Start a new scrypto project with `scrypto new-package [name]` inside the [current challenge directory](7-defi-devpost/)
 5. Before the deadline, commit and push your project folder and create a pull request [here](https://github.com/radixdlt/scrypto-challenges/pulls)
 
 ## Previous Challenges