Rename insert tab event to indent

src/app/edit-session.coffee

@@ -129,7 +129,7 @@ class EditSession
     @moveCursorToEndOfLine()
     @insertNewline()
 
-  insertTab: ->
+  indent: ->
     if @getSelection().isEmpty()
       whitespaceMatch = @lineForBufferRow(@getCursorBufferPosition().row).match /^\s*$/
       if @autoIndent and whitespaceMatch

src/app/editor.coffee

@@ -105,7 +105,7 @@ class Editor extends View
       'select-down': @selectDown
       'select-word': @selectWord
       'newline': @insertNewline
-      'tab': @insertTab
+      'indent': @indent
       'indent-selected-rows': @indentSelectedRows
       'outdent-selected-rows': @outdentSelectedRows
       'backspace': @backspace
@@ -211,7 +211,7 @@ class Editor extends View
   insertText: (text) -> @activeEditSession.insertText(text)
   insertNewline: -> @activeEditSession.insertNewline()
   insertNewlineBelow: -> @activeEditSession.insertNewlineBelow()
-  insertTab: -> @activeEditSession.insertTab()
+  indent: -> @activeEditSession.indent()
   indentSelectedRows: -> @activeEditSession.indentSelectedRows()
   outdentSelectedRows: -> @activeEditSession.outdentSelectedRows()
   cutSelection: -> @activeEditSession.cutSelectedText()

src/app/keymaps/editor.coffee

@@ -7,7 +7,7 @@ window.keymap.bindKeys '.editor',
   'meta-a': 'select-all'
   'enter': 'newline'
   'meta-enter': 'newline-below'
-  'tab': 'tab'
+  'tab': 'indent'
   'backspace': 'backspace'
   'delete': 'delete'
   'meta-x': 'cut'