feat(grunt): enforce code style with JSCS

Based on AngularJS’s .jscsrc rules.

Updated .js files to follow rules.

Closes #30

.jscsrc

@@ -0,0 +1,49 @@
+{
+	"disallowKeywords": ["with"],
+	"disallowKeywordsOnNewLine": ["else"],
+	"disallowMixedSpacesAndTabs": true,
+	"disallowMultipleLineStrings": true,
+	"disallowNewlineBeforeBlockStatements": true,
+	"disallowSpaceAfterObjectKeys": true,
+	"disallowSpaceAfterPrefixUnaryOperators": ["++", "--", "+", "-", "~", "!"],
+	"disallowSpaceBeforeBinaryOperators": [","],
+	"disallowSpaceBeforePostfixUnaryOperators": ["++", "--"],
+	"requireSpacesInAnonymousFunctionExpression": {
+		"beforeOpeningRoundBrace": true
+	},
+	"disallowSpacesInCallExpression": true,
+	"disallowSpacesInFunctionDeclaration": {
+		"beforeOpeningRoundBrace": true
+	},
+	"disallowSpacesInNamedFunctionExpression": {
+		"beforeOpeningRoundBrace": true
+	},
+	"requireSpacesInsideArrayBrackets": {
+		"allExcept": [ "[", "]", "{", "}" ]
+	},
+	"requireSpaceBeforeKeywords": [
+		"else",
+		"while",
+		"catch"
+	],
+	"disallowSpacesInsideParentheses": true,
+	"disallowTrailingComma": true,
+	"disallowTrailingWhitespace": true,
+	"requireCommaBeforeLineBreak": true,
+	"requireLineFeedAtFileEnd": true,
+	"requireSpaceAfterBinaryOperators": ["?", ":", "+", "-", "/", "*", "%", "==", "===", "!=", "!==", ">", ">=", "<", "<=", "&&", "||"],
+	"requireSpaceBeforeBinaryOperators": ["?", ":", "+", "-", "/", "*", "%", "==", "===", "!=", "!==", ">", ">=", "<", "<=", "&&", "||"],
+	"requireSpaceAfterKeywords": ["if", "else", "for", "while", "do", "switch", "return", "try", "catch"],
+	"requireSpaceBeforeBlockStatements": true,
+	"requireSpacesInConditionalExpression": {
+		"afterTest": true,
+		"beforeConsequent": true,
+		"afterConsequent": true,
+		"beforeAlternate": true
+	},
+	"requireSpacesInForStatement": true,
+	"requireSpacesInFunction": {
+		"beforeOpeningCurlyBrace": true
+	},
+	"validateLineBreaks": "LF"
+}