README updates (#758)

README.md

@@ -63,18 +63,20 @@ Firewood guarantees recoverability by not referencing the new nodes in a new rev
   `Revision`.
 
 ## Roadmap
- - [ ] Complete the proof code
- - [ ] Complete the revision manager
- - [ ] Complete the API implementation
- - [ ] Implement a node cache
- - [ ] Hook up the RPC
+
+- [X] Complete the revision manager
+- [X] Complete the API implementation
+- [X] Implement a node cache
+- [ ] Complete the proof code
+- [ ] Hook up the RPC
 
 ## Build
 
 In order to build firewood, `protoc` must be installed. See instructions for installation [here](https://grpc.io/docs/protoc-installation/).
 
 On Mac, you can install via brew:
-```
+
+```sh
 brew install protobuf
 ```
 
@@ -103,7 +105,7 @@ Firewood comes with a CLI tool called `fwdctl` that enables one to create and in
 
 ## Test
 
-```
+```sh
 cargo test --release
 ```