Fix --project help

src/compiler/commandLineParser.ts

@@ -212,8 +212,8 @@ namespace ts {
             shortName: "p",
             type: "string",
             isFilePath: true,
-            description: Diagnostics.Compile_the_project_in_the_given_directory,
-            paramType: Diagnostics.DIRECTORY
+            description: Diagnostics.Compile_the_project_in_the_given_directory_using_tsconfig_json_or_the_specified_config_file,
+            paramType: Diagnostics.DIRECTORY_OR_FILE
         },
         {
             name: "removeComments",
@@ -517,7 +517,7 @@ namespace ts {
                 include: typeAcquisition.include || [],
                 exclude: typeAcquisition.exclude || []
             };
-           return result;
+            return result;
         }
         return typeAcquisition;
     }

src/compiler/diagnosticMessages.json

@@ -2513,7 +2513,7 @@
         "category": "Message",
         "code": 6019
     },
-    "Compile the project in the given directory.": {
+    "Compile the project in the given directory, using 'tsconfig.json' or the specified config file.": {
         "category": "Message",
         "code": 6020
     },
@@ -2573,6 +2573,10 @@
         "category": "Message",
         "code": 6039
     },
+    "DIRECTORY_OR_FILE": {
+        "category": "Message",
+        "code": 6040
+    },
     "Compilation complete. Watching for file changes.": {
         "category": "Message",
         "code": 6042