ref!: change the default behaviour not to drop

remove once and use a flag to start the goroutine.

re-structure benchmarks.
return an error if Read and WriteTo are called on the same object.

Removes printing of Stdin when the results are piped in.

Support for go 1.7

Refactored Read and WriteTo methods to make Blush read the lines one …

…by one and

sends them through a channel to be read later on with Read and WriteTo methods.
This refactoring enhanced the app's performance significantly as it doesn't need
to read the whole stream in one go.

Added print usage.

change the example image link (minor)

change the example image link (minor)

- Reads from files and pipes.

- Uses colouring for matches.
- Groups matches from arguments.
- Accepts #RGB colours.
- Implements io.Reader and io.WriterTo for Blush struct.

Added printing filenames to matched lines.

Configured MultiReader with Conf.
Increased the buffer that reads lines.
Added ignoring binary files.