Merge pull request #1819 from atom/ks-linux

Linux tweaks

.gitignore

@@ -1,4 +1,5 @@
 *.swp
+*~
 .DS_Store
 .project
 .svn

build/tasks/install-task.coffee

@@ -1,5 +1,6 @@
 fs = require 'fs'
 path = require 'path'
+fs = require 'fs-plus'
 runas = null
 
 module.exports = (grunt) ->
@@ -33,3 +34,5 @@ module.exports = (grunt) ->
       # Create relative symbol link for apm.
       process.chdir(binDir)
       fs.symlinkSync(path.join('..', '..', 'share', 'atom', 'resources', 'app', 'apm', 'node_modules', '.bin', 'apm'), 'apm')
+
+      fs.chmodSync(path.join(shareDir, 'atom'), "755")