typos corrected and support added for getting_started (#587)

* typos corrected in tutorialformatter.py and support added for getting_started.rst, .build_locally.sh runs successfully now
* corrected typos and support added for getting_started with correct syntax

Author: Sunny478

_scripts/tutorialformatter.py

@@ -118,7 +118,7 @@ def flatten_sub_tutorials(self, file_):
                 if sub_name in subs:
                     flattened_lines.extend( subs[sub_name] )
                 else:
-                    print 'tutorialformatter.py error: sub-tutorial %s not found.' % sub_name
+                    print("tutorialformatter.py error: sub-tutorial " + sub_name + " not found.")
             else:
                 flattened_lines.append( line )
         return flattened_lines
@@ -144,7 +144,7 @@ def run(self):
         code_prefix = '\n.. code-block:: ' + language + '\n\n'
         code_suffix = '\n'
 
-        print "tutorial-formatter running on", absfilename
+        print("tutorial-formatter running on", absfilename)
         file_ = open( absfilename, 'r' )
         text_to_process = ""
         current_block = ""

doc/getting_started/getting_started.rst

@@ -23,6 +23,7 @@ The simplest way to install MoveIt is from pre-built binaries (Debian): ::
   sudo apt install ros-melodic-moveit
 
 Advanced users might want to `install MoveIt from source <http://moveit.ros.org/install/source/>`_.
+If you want to build your own MoveIt fork, replace the repository uri in the .rosinstall file with your own.
 
 Create A Catkin Workspace
 ^^^^^^^^^^^^^^^^^^^^^^^^^