fixes #254 -- rendering qr code

[tarfa]

Changing qrCodeDisplaySize to size 41 or greater fixes this issue. I chose 43 after some trial and error as that gives a proportional border around the rendered QR code similar to what existed before.

[coveralls]

Pull Request Test Coverage Report for Build 1346

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 2842 unchanged lines in 45 files lost coverage.
• Overall coverage remained the same at 34.419%

---

Files with Coverage Reduction	New Missed Lines	%
aws/spec/cmds_defs.go	4	0.0%
template/internal/ast/build.go	7	95.07%
aws/spec/accesskey.go	8	51.67%
cloud/lazy.go	8	0.0%
cloud/cloud.go	10	0.0%
aws/spec/securitygroup.go	11	65.23%
aws/doc/paramsdoc.go	13	0.0%
template/env.go	14	72.82%
template/params/validation.go	17	54.02%
aws/spec/spec.go	18	53.08%

Totals
Change from base Build 1345:	0.0%
Covered Lines:	13184
Relevant Lines:	38304

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 1346

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 10 unchanged lines in 2 files lost coverage.
• Overall coverage remained the same at 34.419%

---

Files with Coverage Reduction	New Missed Lines	%
console/displayer.go	2	82.52%
aws/fetch/manual_fetchers.go	8	74.13%

Totals
Change from base Build 1345:	0.0%
Covered Lines:	13184
Relevant Lines:	38304

---

💛 - Coveralls