only compile sol file

src/app.js

@@ -693,8 +693,11 @@ function run () {
     if (transactionDebugger.isActive) return
 
     fileManager.saveCurrentFile()
+    editor.clearAnnotations()
     var currentFile = config.get('currentFile')
     if (currentFile) {
+      if (/.(.sol)$/.exec(currentFile)) {
+        // only compile *.sol file.
         var target = currentFile
         var sources = {}
         var provider = fileManager.fileProviderOf(currentFile)
@@ -712,6 +715,7 @@ function run () {
         }
       }
     }
+  }
 
   var previousInput = ''
   var saveTimeout = null
@@ -764,10 +768,6 @@ function run () {
     }
   })
 
-  compiler.event.register('compilationStarted', this, function () {
-    editor.clearAnnotations()
-  })
-
   function startdebugging (txHash) {
     self.event.trigger('debuggingRequested', [])
     transactionDebugger.debug(txHash)