Adding Pulsar to the list of IDEs

[legendaryredfox]

Adding the IDE I use. I hope it can be useful to the community become more well-known

[JanWerder]

Hi, could you fix these issues?

README.md:402:73
✖ 402:73 List item description must end with proper punctuation remark-lint:awesome-list-item
✖ 403:55 List item description must end with proper punctuation remark-lint:awesome-list-item
✖ 404:60 List item description must end with proper punctuation remark-lint:awesome-list-item
✖ 405:79 List item description must end with proper punctuation remark-lint:awesome-list-item

[JanWerder]

Already added with #260