added some snippets like editor in Xcode

based on Apple's document Xcode Workspace Guide
(http://developer.apple.com/mac/library/DOCUMENTATION/DeveloperTools/Conceptual/XcodeWorkspace/100-The_Text_Editor/text_editor.html#//apple_ref/doc/uid/TP40002679-SW35)

Signed-off-by: Michael Sanders <msanders42@gmail.com>

snippets/objc.snippets

@@ -33,16 +33,31 @@ snippet int
 	}
 	${4}
 	@end
+snippet @interface
+	@interface ${1:`Filename('', 'someClass')`} : ${2:NSObject}
+	{${3}
+	}
+	${4}
+	@end
 # Class Implementation
 snippet impl
 	@implementation ${1:`Filename('', 'someClass')`}
 	${2}
 	@end
+snippet @implementation
+	@implementation ${1:`Filename('', 'someClass')`}
+	${2}
+	@end
 # Protocol
 snippet pro
 	@protocol ${1:`Filename('$1Delegate', 'MyProtocol')`} ${2:<NSObject>}
 	${3}
 	@end
+snippet @protocol
+	@protocol ${1:`Filename('$1Delegate', 'MyProtocol')`} ${2:<NSObject>}
+	${3}
+	@end
+# init Definition
 snippet init
 	- (id)init
 	{
@@ -51,6 +66,13 @@ snippet init
 		}
 		return self;
 	}
+# dealloc Definition
+snippet dealloc
+	- (void) dealloc
+	{
+		${1:deallocations}
+		[super dealloc];
+	}
 snippet su
 	[super ${1:init}]${2}
 snippet ibo
@@ -124,6 +146,10 @@ snippet forin
 	for (${1:Class} *${2:some$1} in ${3:array}) {
 		${4}
 	}
+snippet fore
+	for (${1:object} in ${2:array}) {
+		${3:statements}
+	}
 snippet forarray
 	unsigned int ${1:object}Count = [${2:array} count];
 
@@ -131,6 +157,32 @@ snippet forarray
 		${3:id} $1 = [$2 $1AtIndex:index];
 		${4}
 	}
+snippet fora
+	unsigned int ${1:object}Count = [${2:array} count];
+
+	for (unsigned int index = 0; index < $1Count; index++) {
+		${3:id} $1 = [$2 $1AtIndex:index];
+		${4}
+	}
+# Try / Catch Block
+snippet	@try
+	@try {
+		${1:statements}
+	}
+	@catch (NSException * e) {
+		${2:handler}
+	}
+	@finally {
+		${3:statements}
+	}
+snippet @catch
+	@catch (${1:exception}) {
+		${2:handler}
+	}
+snippet @finally
+	@finally {
+		${1:statements}
+	}
 # IBOutlet
 # @property (Objective-C 2.0)
 snippet prop
@@ -141,6 +193,8 @@ snippet syn
 # [[ alloc] init]
 snippet alloc
 	[[${1:foo} alloc] init${2}];${3}
+snippet a
+	[[${1:foo} alloc] init${2}];${3}
 # retain
 snippet ret
 	[${1:foo} retain];${2}
@@ -168,3 +222,26 @@ snippet cl
 	@class ${1:Foo};${2}
 snippet color
 	[[NSColor ${1:blackColor}] set];
+# NSArray
+snippet array
+	NSMutableArray *${1:array} = [NSMutable array];${2}
+snippet nsa
+	NSArray ${1}
+snippet nsma
+	NSMutableArray ${1}
+snippet aa
+	NSArray * array;${1}
+snippet ma
+	NSMutableArray * array;${1}
+# NSDictionary
+snippet dict
+	NSMutableDictionary *${1:dict} = [NSMutableDictionary dictionary];${2}
+snippet nsd
+	NSDictionary ${1}
+snippet nsmd
+	NSMutableDictionary ${1}
+# NSString
+snippet nss
+	NSString ${1}
+snippet nsms
+	NSMutableString ${1}