chore: rename colorscheme in code

README.md

@@ -1,4 +1,4 @@
-Particle for Neovim
+Kagayaki for Neovim
 ===
 
 Under construction.

colors/kagayaki.lua

@@ -1,9 +1,9 @@
 -- You probably always want to set this in your vim file
 vim.opt.background = 'dark'
-vim.g.colors_name = 'particle'
+vim.g.colors_name = 'kagayaki'
 
-package.loaded['particle.particle'] = nil
+package.loaded['kagayaki.kagayaki'] = nil
 
 -- include our theme file and pass it to lush to apply
-require('lush')(require('particle.particle'))
+require('lush')(require('kagayaki.kagayaki'))