general: disable plugin if php not available.

* Adds a check if php exists. If not exists, autodisable.

Signed-off-by: Leonardo Rossi <leonardo.r@cern.ch>

Author: Leonardo Rossi

plugin/Phpqa.vim

@@ -14,6 +14,11 @@
 " }}}
 "-------------------------------------------------
 
+" Disable plugin if php isn't available
+if 0 == has("php")
+    finish
+endif
+
 if exists("g:phpqa_check")
     finish
 endif