Update for SL4 (#26)

Basically, enabling linting via STDIN

linter.py

@@ -17,27 +17,15 @@ class Phpcs(Linter):
     """Provides an interface to phpcs."""
 
     syntax = ('php', 'html', 'html 5')
+    cmd = ('phpcs', '--report=checkstyle', '${args}', '-')
     regex = (
         r'.*line="(?P<line>\d+)" '
         r'column="(?P<col>\d+)" '
         r'severity="(?:(?P<error>error)|(?P<warning>warning))" '
         r'message="(?P<message>.*)" source'
     )
     defaults = {
+        # we want auto-substitution of the filename, but `cmd` does not support that yet
+        '--stdin-path=': '${file}',
         '--standard=': 'PSR2',
     }
-    inline_overrides = ('standard')
-    tempfile_suffix = 'php'
-
-    def cmd(self):
-        """Read cmd from inline settings."""
-        settings = Linter.get_view_settings(self)
-
-        if 'cmd' in settings:
-            command = [settings.get('cmd')]
-        else:
-            command = ['phpcs']
-
-        command.append('--report=checkstyle')
-
-        return command