Fix parser not allowing space chars in arguments.

[catageek]

This PR fixes the instruction parser that was splitting the all lines using commas and space.

The parser now extract the instruction using space separator, and separate arguments using comma separator.

This allows to have space in arguments, like in the string "[index + 1]" which was previously refused.

[ijc8]

Looks good, thanks for the contribution! I notice, though, (from testing with snake) that this can lead to arguments being passed to handleArgument with trailing spaces, which causes a few things (label lookup, handleStack, and the closing bracket check) to fail; calling String.trim on the arguments at any point before they reach handleArgument fixes this.

[catageek]

Your regex was implicitly removing the trailing spaces. I added a trim() call where I think it is the most appropriate, after the comment part removal and before other operations.

Your link to snake does not work. I find this one that does not load for another reason : label references in DAT lines are not supported.

[ijc8]

Alright, great. As for the broken link (I think the site just went down), here's a mirror: http://pastebin.com/yCJ1ubCx