Merge pull request #61 from xiprox/patch-2

Add "Material Indigo" theme

data/themes.yml

@@ -100,3 +100,4 @@
 - { colors: '#B51815,#A51815,#FFFFFF,#B51815,#FF1815,#FFD21F,#FFE21F,#FF5555', name: 'Kansas City Chiefs' }
 - { colors: '#181818,#202020,#99CB3F,#FFFFFF,#202020,#FFFFFF,#99CB3F,#F7124E', name: 'Drund' }
 - { colors: '#607D8B,#546E7A,#90A4AE,#FFFFFF,#455A64,#FFFFFF,#B2FF59,#EF5350', name: 'Material Blue Grey' }
+- { colors: '#3F51B5,#303F9F,#303F9F,#FFFFFF,#303F9F,#FFFFFF,#B2FF59,#9FA8DA', name: 'Material Indigo' }