fix typo in DESCRIPTION (CRAN)

Author: bthieurmel

DESCRIPTION

@@ -1,14 +1,14 @@
 Package: suncalc
 Version: 0.1
-Date: 2017-05-12
-Title: Compute sun position, sunlight phases, moon position and lunar phase
+Date: 2017-05-15
+Title: Compute Sun Position, Sunlight Phases, Moon Position and Lunar Phase
 Authors@R: c(
     person("Vladimir", "Agafonkin", role = c("aut", "cph"),
        comment = "suncalc.js library/lib, https://github.com/mourner"),
     person("Benoit", "Thieurmel", role = c("aut", "cre"),
        comment = "R interface", email = "[email protected]")
     )
-Description: R interface to suncalc.js library, part of the SunCalc.net project <http://suncalc.net>, 
+Description: R interface to 'suncalc.js' library, part of the 'SunCalc.net' project <http://suncalc.net>, 
         for calculating sun position, sunlight phases (times for sunrise, sunset, dusk, etc.), 
         moon position and lunar phase for the given location and time.
 Imports: V8 (>= 1.5)