Update README.md
adding new Copy file task to copy a files in S3
Enhancements:
1) New Task: amazon-s3-copyFile that will allow you to copy a file between buckets within S3
2) Incorporated a string (bucketName) requirement to method BucketExists to allow for validating the existence of more than one bucket.
3) Incorporated a string (fileKey) requirement to method FileExists to allow for validating the existence of multiple filenames.
4) Formatting changes on output statements

Bug Fixes:
1) Added a test to make sure a bucket exists before attempting to delete it
2) Corrected an issue where you were unable to delete files if they were inside a sub directory of the bucket
3) Added back in the CreateBucket method to the deprecated 'amazon-s3' Task to more closely mimic the original behavior of this Task
Update README.md

adding entry for new feature: amazon-s3-copyFile
New Task: amazon-s3-deleteAllFiles
Added new task to delete all the files in a specific bucket. Required attributes are:
- accesskey - required
- secretkey - required
- bucket name - required
- searchstring - required - Can be left blank to delete all files in the specified bucket
Update README.md

Update for new task: amazon-s3-deleteAllFiles
TargetBucket is now an optional attribute. If omitted will use source bucket (BucketName) as the target bucket
Merge branch 'S3_2.0' of https://github.com/MRSchexnayder/Amazon-AWS-NAnt-Tasks.git
Enhancements:
1) New Task: amazon-s3-copyFile that will allow you to copy a file between buckets within S3
2) Incorporated a string (bucketName) requirement to method BucketExists to allow for validating the existence of more than one bucket.
3) Incorporated a string (fileKey) requirement to method FileExists to allow for validating the existence of multiple filenames.
4) Formatting changes on output statements

Bug Fixes:
1) Added a test to make sure a bucket exists before attempting to delete it
2) Corrected an issue where you were unable to delete files if they were inside a sub directory of the bucket
3) Added back in the CreateBucket method to the deprecated 'amazon-s3' Task to more closely mimic the original behavior of this Task