Created LightTable instructions (markdown)

LightTable-instructions.md

@@ -0,0 +1,15 @@
+Create a css file somewhere, in my case `/Users/prokopov/.lighttable.css`:
+
+```css
+.CodeMirror { text-rendering: optimizeLegibility; }
+```
+
+Open LightTable, press `Ctrl + Space`, open `Settings: User Behaviors`.
+
+Add this:
+
+```clj
+[:app :lt.objs.plugins/load-css "/Users/prokopov/lighttable.css"]
+```
+
+Save, changes should apply immediately.