3rd bias model and reporting empty cells

.gitignore

@@ -1,5 +1,6 @@
 CoLoRe
 *.dat
+*.fits
 *.h5
 
 ## From https://github.com/github/gitignore/blob/master/C.gitignore

Makefile

@@ -10,6 +10,8 @@ OPTIONS = -Wall -O3 -std=c99
 DEFINEFLAGS += -D_LONGIDS
 #Use normalized bias model
 #DEFINEFLAGS += -D_BIAS_MODEL_2
+#Use linear bias model
+DEFINEFLAGS += -D_BIAS_MODEL_3
 #Generate debug help. Only useful for development
 DEFINEFLAGS += -D_DEBUG
 #Use double precision floating point? Set to "yes" or "no"
@@ -31,8 +33,8 @@ USE_MPI = yes
 #GSL
 #GSL_INC = -I/add/path
 #GSL_LIB = -L/add/path
-GSL_INC = -I/users/damonge/include
-GSL_LIB = -L/users/damonge/lib
+GSL_INC = -I/home/damonge/include
+GSL_LIB = -L/home/damonge/lib
 #FFTW
 FFTW_INC =
 FFTW_LIB =