add Help commands and bundled tutorial in pdf

InitGui.py

@@ -46,6 +46,11 @@ class Lattice2Workbench (Workbench):
 
     def Initialize(self):
         
+        import lattice2HelpCommands
+        
+        cmdsHelp = lattice2HelpCommands.exportedCommands
+        self.appendMenu('Lattice2', cmdsHelp + ['Separator'])
+        
         import Lattice2
         cmdsArrayTools = ([]
             + Lattice2.ArrayFeatures.Placement.exportedCommands

PyResources/icons.qrc

@@ -1,5 +1,6 @@
 <RCC>
     <qresource>
+        <file>icons/Lattice2.svg</file>
         <file>icons/Lattice2_ArrayFilter.svg</file>
         <file>icons/Lattice2_ArrayFromShape.svg</file>
         <file>icons/Lattice2_AttachablePlacement.svg</file>

lattice2HelpCommands.py

@@ -0,0 +1,47 @@
+import FreeCADGui
+from lattice2Common import *
+
+class CommandBasicTutorial:
+    "opens basic tutorial"
+    def GetResources(self):
+        return {'Pixmap'  : getIconPath("Lattice2.svg"),
+                'MenuText': "Help! Basic tutorial",
+                'ToolTip': "Open basic tutorial (available offline)"}
+        
+    def Activated(self):
+        try:
+            import os
+            import lattice2Dummy
+            tutorial_pdf = os.path.dirname(lattice2Dummy.__file__) + "/ExampleProjects/Lattice2 workbench basic tutorial.pdf".replace("/", os.path.sep)
+
+            import webbrowser
+            webbrowser.open(tutorial_pdf)
+        except Exception as err:
+            msgError(err)
+            
+    def IsActive(self):
+        return True
+            
+FreeCADGui.addCommand('Lattice2_Help_BasicTutorial', CommandBasicTutorial())
+
+
+class CommandOpenManual:
+    "opens wiki"
+    def GetResources(self):
+        return {'Pixmap'  : getIconPath("Lattice2.svg"),
+                'MenuText': "Help! Open Wiki",
+                'ToolTip': "Open Lattice2 documentation (on the web)"}
+        
+    def Activated(self):
+        try:
+            import webbrowser
+            webbrowser.open('https://github.com/DeepSOIC/Lattice2/wiki')
+        except Exception as err:
+            msgError(err)
+            
+    def IsActive(self):
+        return True
+            
+FreeCADGui.addCommand('Lattice2_Help_OpenManual', CommandOpenManual())
+
+exportedCommands = ['Lattice2_Help_BasicTutorial', 'Lattice2_Help_OpenManual']