Set auto-indent config defaults

src/app/edit-session.coffee

@@ -158,10 +158,10 @@ class EditSession
   logScreenLines: (start, end) -> @displayBuffer.logLines(start, end)
 
   shouldAutoIndent: ->
-    config.get("editor.autoIndent") ? true
+    config.get("editor.autoIndent")
 
   shouldAutoIndentPastedText: ->
-    config.get("editor.autoIndentOnPaste") ? false
+    config.get("editor.autoIndentOnPaste")
 
   insertText: (text, options={}) ->
     options.autoIndent ?= @shouldAutoIndent()

src/app/editor.coffee

@@ -17,6 +17,8 @@ class Editor extends View
     fontSize: 20
     showInvisibles: false
     autosave: false
+    autoIndent: true
+    autoIndentOnPaste: false
 
   @content: (params) ->
     @div class: @classes(params), tabindex: -1, =>