Clarify test naming to be more currency agnostic

spec/allocator_spec.rb

@@ -172,7 +172,7 @@
       expect(monies[3]).to eq(Money.new(25.25)) # <-- gets no penny
     end
 
-    specify "#allocate :roundrobin strategy distributes leftover Yen from left to right" do
+    specify "#allocate :roundrobin strategy distributes leftovers from left to right when the currency does not use two decimal places (e.g. `JPY`)" do
       #Roundrobin for 1 yen
       monies = new_allocator(31, 'JPY').allocate([0.5,0.5], :roundrobin)
       expect(monies[0]).to eq(Money.new(16, 'JPY'))
@@ -188,7 +188,7 @@
       expect(monies[5]).to eq(Money.new(5860, "JPY")) # <-- gets no yen
     end
 
-    specify "#allocate :roundrobin_reverse strategy distributes leftover Yen from right to left" do
+    specify "#allocate :roundrobin_reverse strategy distributes leftovers from right to left when the currency does not use two decimal places (e.g. `JPY`)" do
       #Roundrobin for 1 yen
       monies = new_allocator(31, 'JPY').allocate([0.5,0.5], :roundrobin_reverse)
       expect(monies[0]).to eq(Money.new(15, 'JPY'))
@@ -204,7 +204,7 @@
       expect(monies[5]).to eq(Money.new(5861, "JPY")) # <-- gets 1 yen
     end
 
-    specify "#allocate :nearest strategy distributes leftover Yen to the nearest whole Yen" do
+    specify "#allocate :nearest strategy distributes leftovers to the nearest whole subunity when the currency does not use two decimal places (e.g. `JPY`)" do
       #Nearest for 1 yen
       monies = new_allocator(31, 'JPY').allocate([0.5,0.5], :nearest)
       expect(monies[0]).to eq(Money.new(16, 'JPY'))