Udayvir Singh

I had the same issue which was fixed with #125, in which I replaced `vim.notify` with `nvim_echo` for better readability. 

@NTBBloodbath the issue that #120 was trying to solve has already been fixed by my previous PR #125. This PR fixes errors when you try to include json values in...

@teto I have added a test `post_json_form`, it should return a error if you try to run it from the master branch.

@NTBBloodbath any updates on this PR? I have also added another [commit](https://github.com/udayvir-singh/rest.nvim/commit/48a7c8564b8ee3e0eaafa094d911699d92a89a09) that fixes parsing of curl arguments with spaces in them. For example: ```js GET http://localhost:8000/ -c cookies ```...