Added nord theme (#24)

* Added nord theme

Credit : Ported from lightline nord theme

* Added nord to THEMES.md

* Checked nord theme in README.md

README.md

@@ -259,4 +259,4 @@ Please create an issue/ pr if you want to see more functionality implemented
   - [ ] [dense-analysis/ale](https://github.com/dense-analysis/ale)
 - Themes
   - [ ] support for `notermguicolors`
-  - [ ] nord theme
+  - [x] nord theme

THEMES.md

@@ -15,6 +15,12 @@ All available themes are only best effort ports by myself/ other users. If you f
 ![command](https://user-images.githubusercontent.com/41551030/103467919-2ba8b380-4d54-11eb-8585-6c667fd5082e.png)
 ![replace](https://user-images.githubusercontent.com/41551030/103467925-32372b00-4d54-11eb-88d6-6d39c46854d8.png)
 
+### nord
+![normal](https://user-images.githubusercontent.com/13149513/103517642-ad0b5d80-4e9c-11eb-84fd-71541a50abaa.jpg)
+![insert](https://user-images.githubusercontent.com/13149513/103517655-b268a800-4e9c-11eb-8bd6-e2808d940779.jpg)
+![visual](https://user-images.githubusercontent.com/13149513/103517664-b5fc2f00-4e9c-11eb-85dd-e0d7ed1cdb97.jpg)
+![replace](https://user-images.githubusercontent.com/13149513/103517682-ba284c80-4e9c-11eb-9210-d3e28a05f4a2.jpg)
+
 ### onedark
 ![normal](https://user-images.githubusercontent.com/41551030/103468158-a83c9180-4d56-11eb-89cb-28d802f02341.png)
 ![insert](https://user-images.githubusercontent.com/41551030/103468174-cdc99b00-4d56-11eb-8723-fd817ff06404.png)

lua/lualine/themes/nord.lua

@@ -0,0 +1,76 @@
+local M = {  }
+
+local colors = {
+  nord1  = "#3B4252", 
+  nord3  = "#4C566A", 
+  nord5  = "#E5E9F0", 
+  nord6  = "#ECEFF4", 
+  nord7  = "#8FBCBB", 
+  nord8  = "#88C0D0", 
+  nord13 = "#EBCB8B",
+
+}
+
+M.normal = {
+  a = {
+    fg = colors.nord1,
+    bg = colors.nord8,
+  },
+  b = {
+    fg = colors.nord5,
+    bg = colors.nord1,
+  },
+  c = {
+    fg = colors.nord5,
+    bg = colors.nord3,
+  }
+}
+
+M.insert = {
+  a = {
+    fg = colors.nord1,
+    bg = colors.nord6,
+  },
+  b = M.normal.b,
+  c = M.normal.c,
+}
+
+
+M.visual = {
+  a = {
+    fg = colors.nord1,
+    bg = colors.nord7,
+  },
+  b = M.normal.b,
+  c = M.normal.c,
+}
+
+M.replace = {
+  a = {
+    fg = colors.nord1,
+    bg = colors.nord13,
+  },
+  b = M.normal.b,
+  c = M.normal.c,
+}
+
+M.command = M.normal 
+
+M.terminal = M.normal
+
+M.inactive = {
+  a = {
+    fg = colors.nord1,
+    bg = colors.nord8,
+  },
+  b = {
+    fg = colors.nord5,
+    bg = colors.nord1,
+  },
+  c = {
+    fg = colors.nord5,
+    bg = colors.nord1,
+  },
+}
+
+return M