String.replace() works only with the first occurence

[Sweetchuck]

The following lines might cause problems in certain cases.

• https://github.com/anaptfox/cacheman-file/blob/8fcf3f8087790b9a0830d37951c06c991cc286a2/index.js#L20
• https://github.com/anaptfox/cacheman-file/blob/8fcf3f8087790b9a0830d37951c06c991cc286a2/index.js#L35
• https://github.com/anaptfox/cacheman-file/blob/8fcf3f8087790b9a0830d37951c06c991cc286a2/index.js#L93
• https://github.com/anaptfox/cacheman-file/blob/8fcf3f8087790b9a0830d37951c06c991cc286a2/index.js#L112

file = file.replace('.json', '').replace('_', ':');

file = file.replace(/\.json$/, '').replace(/_/g, ':');

Other widely used pattern is 'foo:foo'.split('foo').join('bar'); // bar:bar