Update README.md

README.md

@@ -1165,21 +1165,21 @@ You can download the PDF and Epub version of this repository from the latest run
  **[⬆ Back to Top](#table-of-contents)**
 
 44. ### What is the difference between promise and observable?
- Below are the list of differences between promise and observable,
+ Below are the list of differences between promise and observable:
 
  | Observable | Promise |
  |---- | --------- |
- | Declarative: Computation does not start until subscription so that they can be run whenever you need the result | Execute immediately on creation|
- | Provide multiple values over time | Provide only one |
- | Subscribe method is used for error handling which makes centralized and predictable error handling| Push errors to the child promises |
+ | Declarative: Computation does not start until subscription, so they can run whenever you need the result | Executes immediately on creation|
+ | Provides multiple values over time | Provides only one |
+ | Subscribe method is used for error handling that facilitates centralized and predictable error handling | Push errors to the child promises |
  | Provides chaining and subscription to handle complex applications | Uses only .then() clause |
 
  **[⬆ Back to Top](#table-of-contents)**
 
 45. ### What is multicasting?
  Multi-casting is the practice of broadcasting to a list of multiple subscribers in a single execution.
 
- Let's demonstrate the multi-casting feature,
+ Let's demonstrate the multi-casting feature:
  ```javascript
  var source = Rx.Observable.from([1, 2, 3]);
  var subject = new Rx.Subject();