Fix a typo: infrasture -> infrastructure

README.md

@@ -21,7 +21,7 @@ Consult the [Roadmap](/ROADMAP.md) for a complete state description of the proje
 
 IPFS implementation in JavaScript is a work in progress. As such, there's a few things you can do right now to help out:
 
-  * Go through the modules below and **check out existing issues**. This would be especially useful for modules in active development. Some knowledge of IPFS may be required, as well as the infrasture behind it - for instance, you may need to read up on p2p and more complex operations like muxing to be able to help technically.
+  * Go through the modules below and **check out existing issues**. This would be especially useful for modules in active development. Some knowledge of IPFS may be required, as well as the infrastructure behind it - for instance, you may need to read up on p2p and more complex operations like muxing to be able to help technically.
   * **Perform code reviews**. Most of this has been developed by @diasdavid, which means that more eyes will help a) speed the project along b) ensure quality and c) reduce possible future bugs.
   * Take a look at go-ipfs and some of the planning repositories or issues: for instance, the libp2p spec [here](https://github.com/ipfs/specs/pull/19). Contributions here that would be most helpful are **top-level comments** about how it should look based on our understanding. Again, the more eyes the better.
   * **Add tests**. There can never be enough tests.