Add: bower support

[lexich]

No description provided.

[coveralls]

Coverage decreased (-7.5%) to 92.453% when pulling 362985a on lexich:bower-support into 8e4ec4a on conventional-changelog:master.

[stevemao]

Thanks for you PR.@lexich See #76 (comment)

[coveralls]

Coverage remained the same at 100.0% when pulling d7ffaa5 on lexich:bower-support into 8e4ec4a on conventional-changelog:master.

[mikecfisher]

Would love to see this merged as this is the only thing blocking our team from using this.

[lexich]

+1 I think that this code can be merged and after when better solution will come - cut off this 'spagetty' code. But functionality will be available at this moment.