Rubocop: Using single-quotes properly

lib/squib/api/data.rb

@@ -32,7 +32,7 @@ module Squib
       (s.first_row+1).upto(s.last_row) do |row|
         cell = s.cell(row,col)
         # Roo hack for avoiding unnecessary .0's on whole integers
-        cell = s.excelx_value(row,col) if s.excelx_type(row,col) == [:numeric_or_formula, "General"]
+        cell = s.excelx_value(row,col) if s.excelx_type(row,col) == [:numeric_or_formula, 'General']
         data[header] << cell
       end#row
     end#col

lib/squib/api/image.rb

@@ -20,7 +20,7 @@ module Squib
     def png(opts = {})
       opts = needs(opts, [:range, :files, :x, :y, :alpha, :layout, :blend])
       Dir.chdir(@img_dir) do
-        @progress_bar.start("Loading PNG(s)", opts[:range].size) do |bar|
+        @progress_bar.start('Loading PNG(s)', opts[:range].size) do |bar|
           opts[:range].each do |i|
             @cards[i].png(opts[:file][i], opts[:x][i], opts[:y][i], opts[:alpha][i], opts[:blend][i])
             bar.increment
@@ -51,7 +51,7 @@ module Squib
     def svg(opts = {})
       p = needs(opts,[:range, :files, :svgid, :force_svgid, :x, :y, :width, :height, :layout, :alpha, :blend])
       Dir.chdir(@img_dir) do
-        @progress_bar.start("Loading SVG(s)", p[:range].size) do |bar|
+        @progress_bar.start('Loading SVG(s)', p[:range].size) do |bar|
           p[:range].each do |i|
             unless p[:force_id][i] && p[:id][i].to_s.empty?
               @cards[i].svg(p[:file][i], p[:id][i], p[:x][i], p[:y][i],

lib/squib/api/units.rb

@@ -6,7 +6,7 @@ module Squib
     # @example
     #   inches(2.5) # 750 (for default Deck::dpi of 300)
     #
-    # @param [Decimal] n, the number of inches
+    # @param n [Decimal], the number of inches
     # @return [Decimal] the number of pixels, according to the deck's DPI
     # @api public
     def inches(n)