Move market bid cost to how-tos

Author: kdayday

docs/make.jl

@@ -23,6 +23,7 @@ pages = OrderedDict(
             "...get all the buses in a system" => "how_to/get_buses.md",
             "...get the available generators in a system" => "how_to/get_available_generators.md",
             "...add an Operating Cost" => "how_to/add_cost_curve.md",
+            "...add a market bid" => "how_to/market_bid_cost.md",
             "...add additional data to a component" => "how_to/adding_additional_fields.md",
             "...add a new Type" => "how_to/add_new_types.md",
             "...improve performance with time series data" => "how_to/improve_ts_performance.md",
@@ -38,7 +39,6 @@ pages = OrderedDict(
             "explanation/time_series.md",
             "explanation/example_dynamic_data.md",
             "explanation/cost_functions.md",
-            "explanation/market_bid_cost.md"
             ],
         "Model Library" => Any[],
         "Reference" =>

docs/src/explanation/market_bid_cost.md renamed to docs/src/how_to/market_bid_cost.md

@@ -1,6 +1,6 @@
-# PowerSystems [`MarketBidCost`](@ref)
+# Add a Market Bid
 
-Is an `OperationalCost` data structure that allows the user to run a production
+A [`MarketBidCost`](@ref) is an `OperationalCost` data structure that allows the user to run a production
 cost model that is very similar to most US electricity market auctions with bids for energy
 and ancillary services jointly. This page showcases how to create data for this cost function.