Minor changes for the new version

This is the first patch for 'Rogue Process', a game for Ludum Dare 40.

The update contains NO MAJOR CHANGES TO THE GAME i.e, no new features are added to this update.
The update contains following changes:

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Controls
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- The player will accelerate/retard using W and S keys or UP and DOWN cursor keys.

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Collision
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- The collision of player has been updated for better maneuverability, especially near walls.

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Aesthetic (only for HUD)
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- The HUD text has been given color for better identification of Hp, Ammo and Coin numbers.
- The HUD also shows maximum HP.