Improved error handling

[suarezjulian]

Changes:

• We now throw an exception when there is an error parsing the response from server
• When a request fails due to IOException or a malformed url we now throw an exception

[codecov-io]

Codecov Report

Merging #44 into master will increase coverage by 0.14%. The diff coverage is 54.83%.

@@            Coverage Diff             @@
##           master      #44      +/-   ##
==========================================
+ Coverage   61.69%   61.84%   +0.14%     
==========================================
  Files          22       22              
  Lines         825      823       -2     
  Branches       92       92              
==========================================
  Hits          509      509              
+ Misses        272      270       -2     
  Partials       44       44

Impacted Files	Coverage Δ
src/main/java/com/authy/api/OneTouch.java	66.66% <ø> (ø)	:arrow_up:
src/main/java/com/authy/api/Hash.java	31.7% <ø> (ø)	:arrow_up:
src/main/java/com/authy/api/Users.java	79.34% <0%> (ø)	:arrow_up:
src/main/java/com/authy/api/PhoneVerification.java	80% <100%> (+7.77%)	:arrow_up:
src/main/java/com/authy/api/PhoneInfo.java	72.22% <100%> (+5.55%)	:arrow_up:
src/main/java/com/authy/api/Tokens.java	92.85% <100%> (ø)	:arrow_up:
src/main/java/com/authy/api/Instance.java	67.74% <20%> (-4.68%)	:arrow_down:
src/main/java/com/authy/api/Resource.java	73.45% <25%> (-2.48%)	:arrow_down:
src/main/java/com/authy/api/OneTouchResponse.java	47.82% <50%> (ø)	:arrow_up:
src/main/java/com/authy/AuthyException.java	100% <0%> (+50%)	:arrow_up: