Rename addressbook.json and references

[koonweee]

Resolve #50

[codecov]

Codecov Report

Merging #58 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master      #58   +/-   ##
=========================================
  Coverage     72.31%   72.31%           
  Complexity      400      400           
=========================================
  Files            70       70           
  Lines          1228     1228           
  Branches        124      124           
=========================================
  Hits            888      888           
  Misses          308      308           
  Partials         32       32           

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/seedu/address/model/UserPrefs.java	80.00% <100.00%> (ø)	10.00 <0.00> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f1b2ed6...5494d40. Read the comment docs.