Merge pull request #312 from dixyushi/update-doc-buildNg

updated function buildNg

Author: GuentherJulian

documentation/Functions.md

@@ -497,15 +497,33 @@ Note: The command for execution will be generated by Katacoda runner, so user wi
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 ### buildNg <a name="buildNg"></a>
+This function is used to build Angular project.
+
 #### parameter 
-1. Path to the angular project, relative to workspace
-2. (Optional) Custom output directory.
+This function consist of two parameter.
+
+1. First parameter:
+    - **Required**
+    - **Type**- String
+    - **Description**-It is the path to the Angular project, relative to workspace.
+
+2. Second parameter:
+    - **optional**
+    - **Type**- String
+    - **Description**- It is the custom output directory.
 #### example 
-buildNg("exampleAngularProject")
-Will build the angular project to default output directory defined in angular.json outputPath key, normally set to dist/.
+* buildNg("exampleAngularProject")
+Will build the Angular project to default output directory defined in angular.json outputPath key, normally set to dist/.
+
+* buildNg("exampleAngularProject", "testOutput")
+Will build the Angular project to output directory testOutput.
+
+Note:
+1. To use only one parameter, you should have Angular CLI installed and the folder should exist. This can be done by using the devonfw-ide or by installing it manually with the npmInstall function.
+
+2. The command for execution will be generated by Katacoda runner, so user will have to execute this command manually.
 
-buildNg("exampleAngularProject", "testOutput")
-Will build the angular project to output directory testOutput.
+3. No background script will run.
 
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