Update README.md

Author: edignot

README.md

@@ -10,7 +10,7 @@ There might still be some personal comments added for my learning purposes.
 ## Algorithms by Topic:
 - **Math**
     * Fibonacci Sequence [Solution](https://github.com/edignot/algorithm-data-structure-practice/blob/master/src/fibonacci-sequence/fibonacci-sequence.js) [Test file](https://github.com/edignot/algorithm-data-structure-practice/blob/master/src/fibonacci-sequence/fibonacci-sequence.test.js)
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+- ![#f03c15](https://via.placeholder.com/15/f03c15/000000?text=+) `#f03c15`
 ## Usage
 -   Clone this repo
 -   Run npm install to get dependencies