add eclim's checker extension, when eclim is running , it can instead of syntastic

autoload/airline/extensions/eclim.vim

@@ -0,0 +1,30 @@
+" MIT License. Copyright (c) 2013 Bailey Ling.
+" vim: et ts=2 sts=2 sw=2
+"if !exists('g:eclim_instead_syntastic')
+"let g:eclim_instead_syntastic = 0
+"endif
+
+"if g:eclim_instead_syntastic == 1
+"finish
+"endif
+if !exists(':ProjectCreate')
+  finish
+endif
+
+function! airline#extensions#eclim#get_warnings()
+  let eclimList = eclim#display#signs#GetExisting()
+  if !empty(eclimList)
+    let errorsLine = eclimList[0]['line']
+    let errorsNumber = len(eclimList)
+    let errors = "[Warring: line:".string(errorsLine)." (".string(errorsNumber).")]"
+    return errors.(g:airline_symbols.space)
+  endif
+  return ''
+endfunction
+
+function! airline#extensions#eclim#init(ext)
+  if !exists('g:eclim_instead_syntastic')
+    let g:eclim_instead_syntastic = 1
+  endif
+  call airline#parts#define_function('eclim', 'airline#extensions#eclim#get_warnings')
+endfunction