Replace master links to main

Author: Markel

README.md

@@ -1,4 +1,4 @@
-# Metacritic Crawler [![Python version](https://img.shields.io/badge/python-%E2%89%A53.6-blue.svg?style=flat-square&logo=python&logoColor=white)](https://www.python.org/downloads/) [![Travis (.com)](https://img.shields.io/travis/com/MarkelFe/metacritic-crawler/master.svg?logo=travis-ci&logoColor=white&style=flat-square)](https://travis-ci.com/MarkelFe/metacritic-crawler)
+# Metacritic Crawler [![Python version](https://img.shields.io/badge/python-%E2%89%A53.6-blue.svg?style=flat-square&logo=python&logoColor=white)](https://www.python.org/downloads/) [![Travis (.com)](https://img.shields.io/travis/com/MarkelFe/metacritic-crawler/main.svg?logo=travis-ci&logoColor=white&style=flat-square)](https://travis-ci.com/MarkelFe/metacritic-crawler)
 Tools for crawling data from metacritic.com (for educational purposes)
 
 **IMPORTANT NOTE:**
@@ -24,7 +24,7 @@ Scrapy has his own command line tool, you **shouldn't** use the default Python S
 5. Done! The file ```games.db```  includes all the information. Use your preferred SQLite reader.
 
 ## Modifiers
-These modifiers are for [`games.py`](https://github.com/MarkelFe/metacritic-crawler/blob/master/games.py) and should be placed after the command `scrapy runspider games.py -o gm.jl`. 
+These modifiers are for [`games.py`](https://github.com/MarkelFe/metacritic-crawler/blob/main/games.py) and should be placed after the command `scrapy runspider games.py -o gm.jl`. 
 
 |          Options         | Values |        Description             | Default value |
 |:-------------------------:|:------:|:---------------------------------------------------------:|:-------------:|
@@ -39,7 +39,7 @@ These modifiers are for [`games.py`](https://github.com/MarkelFe/metacritic-craw
 The process consists of 2 files, the first, ```games.py```, runs through [this page](https://www.metacritic.com/browse/games/score/metascore/all/all/filtered) and collects all the data on a file called games.jl. After, ```analyze.py``` uses this list of games and goes to every single page and gets the details of all the games. These details are converted to a SQLite database, this process occurs while new pages are being scraped, so do not hesitate about stopping the script (note: for how scrapy works it may take a while to stop, as it waits until the loaded pages are scrapped).
 
 ## Example
-This is an example of the result of running these scripts. The first line is the variable names of [analyze.py](https://github.com/MarkelFe/metacritic-crawler/blob/master/analyze.py). The second line includes the information from the game [Tetris DS](https://www.metacritic.com/game/ds/tetris-ds).
+This is an example of the result of running these scripts. The first line is the variable names of [analyze.py](https://github.com/MarkelFe/metacritic-crawler/blob/main/analyze.py). The second line includes the information from the game [Tetris DS](https://www.metacritic.com/game/ds/tetris-ds).
 
 |   title   | platform |  company |    release   |          description          | metascore |         critics_desc        | critics_count | user_score |          user_desc          | user_count |  players  | rating |
 |:---------:|:--------:|:--------:|:------------:|:-----------------------------:|:---------:|:---------------------------:|:-------------:|:----------:|:---------------------------:|:----------:|:---------:|:------:|