new: switch icon
new: swap feature
del: switch icon
upd: incremented version
upd: footer text
new: swap icon
upd: replaced swap text with icon
upd: removed unwanted styles
add: warning message if no swap
Merge branch 'master' into 'switch-currency-option'

Resolved Conflicts:
	source/config.xml
	source/css/options.css
	source/options.html
new: swap code
Merge branch 'master' into 'switch-currency-option'

Conflicts:
	source/converter.html
	source/js/converter.js
	source/js/options.js
	source/options.html
new: screenshots of preferences and converter
upd: version to 1.7
new: extension package v1.7
Merge branch 'refs/heads/switch-currency-option'

Conflicts:
	instant-currency-rates.oex
	source/config.xml
	source/converter.html
	source/js/converter.js
	source/js/options.js
	source/options.html