New Spawning System using .txt Files

-Each line represents a wave
-Each line has a string with '/' as delimiters
format:
type(a,b,c,...,z)/time betweeen indivdual(float)/number of individuals
(int)/time between types (float)
and the last float value is time between waves.
ex:
a/2.0/5/10.0/b/3.0/3/5.0/c/1.0/5/0.0/15.0
a - type to spawn
2.0 - time between individuals
5 - number of objects to spawn
10.0 - time before spawning next type