Added Prepend to G-Code to default settings. This solves #115.

FlatCAMApp.py

@@ -205,6 +205,7 @@ class App(QtCore.QObject):
             "geometry_paintmargin": self.defaults_form.geometry_group.paintmargin_entry,
             "cncjob_plot": self.defaults_form.cncjob_group.plot_cb,
             "cncjob_tooldia": self.defaults_form.cncjob_group.tooldia_entry,
+            "cncjob_prepend": self.defaults_form.cncjob_group.prepend_text,
             "cncjob_append": self.defaults_form.cncjob_group.append_text
         }
 
@@ -243,6 +244,7 @@ class App(QtCore.QObject):
             "geometry_paintmargin": 0.0,
             "cncjob_plot": True,
             "cncjob_tooldia": 0.016,
+            "cncjob_prepend": "",
             "cncjob_append": "",
 
             # Persistence
@@ -323,6 +325,7 @@ class App(QtCore.QObject):
             "geometry_paintmargin": self.options_form.geometry_group.paintmargin_entry,
             "cncjob_plot": self.options_form.cncjob_group.plot_cb,
             "cncjob_tooldia": self.options_form.cncjob_group.tooldia_entry,
+            "cncjob_prepend": self.options_form.cncjob_group.prepend_text,
             "cncjob_append": self.options_form.cncjob_group.append_text
         }
 
@@ -360,6 +363,7 @@ class App(QtCore.QObject):
             "geometry_paintmargin": 0.0,
             "cncjob_plot": True,
             "cncjob_tooldia": 0.016,
+            "cncjob_prepend": "",
             "cncjob_append": ""
         })
         self.options.update(self.defaults)  # Copy app defaults to project options

FlatCAMGUI.py

@@ -748,7 +748,18 @@ class CNCJobOptionsGroupUI(OptionsGroupUI):
         )
         self.layout.addWidget(self.export_gcode_label)
 
-        # Append text to Gerber
+        # Prepend to G-Code
+        prependlabel = QtGui.QLabel('Prepend to G-Code:')
+        prependlabel.setToolTip(
+            "Type here any G-Code commands you would\n"
+            "like to add at the beginning of the G-Code file."
+        )
+        self.layout.addWidget(prependlabel)
+
+        self.prepend_text = FCTextArea()
+        self.layout.addWidget(self.prepend_text)
+
+        # Append text to G-Code
         appendlabel = QtGui.QLabel('Append to G-Code:')
         appendlabel.setToolTip(
             "Type here any G-Code commands you would\n"