Add descriptions to all projectiles and warheads

OpenRA.Mods.Common/Projectiles/AreaBeam.cs

@@ -21,6 +21,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.Projectiles
 {
+	[Desc("Beam projectile that travels in a straight line.")]
 	public class AreaBeamInfo : IProjectileInfo
 	{
 		[Desc("Projectile speed in WDist / tick, two values indicate a randomly picked velocity per beam.")]

OpenRA.Mods.Common/Projectiles/Bullet.cs

@@ -22,6 +22,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.Projectiles
 {
+	[Desc("Projectile that travels in a straight line or arc.")]
 	public class BulletInfo : IProjectileInfo
 	{
 		[Desc("Projectile speed in WDist / tick, two values indicate variable velocity.")]

OpenRA.Mods.Common/Projectiles/GravityBomb.cs

@@ -17,6 +17,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.Projectiles
 {
+	[Desc("Projectile with customisable acceleration vector.")]
 	public class GravityBombInfo : IProjectileInfo
 	{
 		public readonly string Image = null;

OpenRA.Mods.Common/Projectiles/InstantHit.cs

@@ -18,7 +18,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.Projectiles
 {
-	[Desc("Simple, invisible, usually direct-on-target projectile.")]
+	[Desc("Instant, invisible, usually direct-on-target projectile.")]
 	public class InstantHitInfo : IProjectileInfo
 	{
 		[Desc("The maximum/constant/incremental inaccuracy used in conjunction with the InaccuracyType property.")]

OpenRA.Mods.Common/Projectiles/Missile.cs

@@ -21,6 +21,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.Projectiles
 {
+	[Desc("Projectile with smart tracking.")]
 	public class MissileInfo : IProjectileInfo
 	{
 		[Desc("Name of the image containing the projectile sequence.")]