Correct spelling and grammar in README.md (#125)

I was reading through the readme and was really impressed by the project, but the spelling mistakes and missing words made it look much less professional to my eyes, so I fixed them.

README.md

@@ -70,8 +70,8 @@ The source code for this demo is available in the [examples/cu_rp_balancebot](ex
 2. **Runtime generation**: The current implementation works for up to middle size robots (~a couple dozen of tasks).
 3. **Log reader**: You can reread the logs generated by Copper from your robot, sim or resim.
 4. **Structured log reader**: debug logs are indexed and string interned at compile time for maximum efficiency.
-5. **Components**: We have a grwing number of drivers, algorithms and standard interfaces, if you have implemented a new
-   compnent, ping us and we will add it to the list!
+5. **Components**: We have a growing number of drivers, algorithms and standard interfaces, if you have implemented a new
+   component, ping us and we will add it to the list!
 6. **log replay / resim**: You can deterministically replay/resim a log. If all you tasks are deterministic, you will
    get the exact same result as a real log on the robot or from the sim.
 7. **Simulation**: We have a simple simulation environment to test your robot without a real robot.
@@ -231,19 +231,17 @@ examples/cu_caterpillar
 examples/ros_caterpillar
 ```
 
-You can them out either just logging on a desktop or with GPIOs on a RPi and you should see a couple order of magnitude
-difference in performance.
+You can try them out by either just logging on a desktop, or with GPIOs on a RPi.
+You should see a couple order of magnitude difference in performance.
 
-Copper has been design for performance first. Not unlike a game engine we use a data oriented approach to minimize latency
+Copper has been designed for performance first. Not unlike a game engine, we use a data oriented approach to minimize latency
 and maximize throughput.
 
 ### Safety
 
-As Copper is written in Rust, it is memory safe and thread safe by design. It is also designed to be easy to use and to
-avoid common pitfalls.
+As Copper is written in Rust, it is memory safe and thread safe by design. It is also designed to be easy to use and avoid common pitfalls.
 
-As we progress on this project we plan on implementing more and more early warning to help you avoid "the death by a
-thousand cuts" that can happen in a complex system.
+As we progress on this project we plan on implementing more and more early warnings to help you avoid "the death by a thousand cuts" that can happen in a complex system.
 
 ### Release Notes
 
@@ -258,11 +256,11 @@ You can find the release notes [here](https://github.com/copper-project/copper-r
 Here are some of the features we plan to implement next (in ~order of priority), if you are interested in contributing
 on any of those, please let us know!:
 
-- [ ] **Parallel Copper Lists**: Today Copper is monothreaded; this should enable concurrent Copper Lists to be executed
+- [ ] **Parallel Copper Lists**: Today Copper is single-threaded; this should enable concurrent Copper Lists to be executed
   at the same time with no contention.
 - [ ] **ROS/DDS interfacing**: Build a pair of sink and source to connect to existing ROS systems, helping users migrate
   their infra bit by bit.
-- [ ] **Extensible scheduling**: Enables a way to give hints to copper to schedule the workload
+- [ ] **Extensible scheduling**: Enables a way to give hints to copper to schedule the workload.
 - [ ] **Modular Configuration**: As robots built with Copper gain complexity, users will need to build "variations" of
   their robots without duplicating their entire RON file.
 - [ ] **Distributed Copper**: Currently, we can only create one process. We need proper RPC filtering copper lists per