Complete builders, start work on using them

src/Discord.Net.Commands/Builders/ParameterBuilder.cs

@@ -0,0 +1,86 @@
+using System;
+using System.Threading.Tasks;
+using System.Collections.Generic;
+
+namespace Discord.Commands.Builders
+{
+    public class ParameterBuilder
+    {
+        public ParameterBuilder()
+        { }
+
+        public ParameterBuilder(string name)
+        {
+            Name = name;
+        }
+
+        public string Name { get; set; }
+        public string Summary { get; set; }
+        public object DefaultValue { get; set; }
+        public Type ParameterType { get; set; }
+
+        public TypeReader TypeReader { get; set; }
+
+        public bool Optional { get; set; }
+        public bool Remainder { get; set; }
+        public bool Multiple { get; set; }
+
+        public ParameterBuilder SetName(string name)
+        {
+            Name = name;
+            return this;
+        }
+
+        public ParameterBuilder SetSummary(string summary)
+        {
+            Summary = summary;
+            return this;
+        }
+
+        public ParameterBuilder SetDefault<T>(T defaultValue)
+        {
+            DefaultValue = defaultValue;
+            ParameterType = typeof(T);
+
+            if (ParameterType.IsArray)
+                ParameterType = ParameterType.GetElementType();
+
+            return this;
+        }
+
+        public ParameterBuilder SetType(Type parameterType)
+        {
+            ParameterType = parameterType; 
+            return this;
+        }
+
+        public ParameterBuilder SetTypeReader(TypeReader reader)
+        {
+            TypeReader = reader;
+            return this;
+        }
+
+        public ParameterBuilder SetOptional(bool isOptional)
+        {
+            Optional = isOptional;
+            return this;
+        }
+
+        public ParameterBuilder SetRemainder(bool isRemainder)
+        {
+            Remainder = isRemainder;
+            return this;
+        }
+
+        public ParameterBuilder SetMultiple(bool isMultiple)
+        {
+            Multiple = isMultiple;
+            return this;
+        }
+
+        internal ParameterInfo Build(CommandInfo info, CommandService service)
+        {
+            return new ParameterInfo(this, info, service);
+        }
+    }
+}