Added Braille support

GPL 2 licensed TTF file from https://yudit.org/download/fonts/UBraille/UBraille.ttf
Fixes ryanoasis#482

font-patcher

@@ -186,6 +186,7 @@ class font_patcher:
         sym_font_group.add_argument('--powerlineextra',                             dest='powerlineextra',       default=False, action='store_true', help='Add Powerline Glyphs (https://github.com/ryanoasis/powerline-extra-symbols)')
         sym_font_group.add_argument('--material', '--materialdesignicons', '--mdi', dest='material',             default=False, action='store_true', help='Add Material Design Icons (https://github.com/templarian/MaterialDesign)')
         sym_font_group.add_argument('--weather', '--weathericons',                  dest='weather',              default=False, action='store_true', help='Add Weather Icons (https://github.com/erikflowers/weather-icons)')
+        sym_font_group.add_argument('--braille',                                    dest='braille',              default=False, action='store_true', help='Add Braille Glyphs')
 
         self.args = parser.parse_args()
 
@@ -202,6 +203,7 @@ class font_patcher:
             self.args.powerlineextra = True
             self.args.material = True
             self.args.weather = True
+            self.args.braille = True
 
         if not self.args.complete:
             # add the list of arguments for each symbol font to the list self.sym_font_args
@@ -274,6 +276,10 @@ class font_patcher:
             if self.args.weather:
                 additionalFontNameSuffix += " WEA"
                 verboseAdditionalFontNameSuffix += " Plus Weather Icons"
+            if self.args.braille:
+                additionalFontNameSuffix += " B"
+                verboseAdditionalFontNameSuffix += " Plus Braille Icons"
+
 
         # if all source glyphs included simplify the name
         else:
@@ -609,6 +615,7 @@ class font_patcher:
             {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': self.octiconsExactEncodingPosition,  'SymStart': 0X26A1, 'SymEnd': 0X26A1, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Zap
             {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': self.octiconsExactEncodingPosition,  'SymStart': 0xF27C, 'SymEnd': 0xF27C, 'SrcStart': 0xF4A9, 'SrcEnd': 0xF4A9, 'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Desktop
             {'Enabled': self.args.codicons,             'Name': "Codicons",                'Filename': "codicons/codicon.ttf",                           'Exact': True,                                'SymStart': 0xEA60, 'SymEnd': 0xEBEB, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
+            {'Enabled': self.args.braille,              'Name': "Braille",                 'Filename': "UBraille.ttf",                                   'Exact': False,                               'SymStart': 0x2800, 'SymEnd': 0x28FF, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
             {'Enabled': self.args.custom,               'Name': "Custom",                  'Filename': self.args.custom,                                 'Exact': True,                                'SymStart': 0x0000, 'SymEnd': 0x0000, 'SrcStart': 0x0000, 'SrcEnd': 0x0000, 'ScaleGlyph': None,             'Attributes': CUSTOM_ATTR}
         ]