Check for finite numbers before inserting the data into the database; Link against math library; Updated Readme

RaspberryPi/makefile

@@ -5,7 +5,7 @@ VERSION = 1.0
 CC      = cc
 CFLAGS  = -Wall -g -D_GNU_SOURCE -D_REENTRANT -DVERSION=\"$(VERSION)\" `mysql_config --cflags`
 #LDFLAGS = -lm -lpthread `gtk-config --cflags` `gtk-config --libs` -lgthread
-LDFLAGS = -lwiringPi -lconfig `mysql_config --libs` -lcurl
+LDFLAGS = -lwiringPi -lconfig `mysql_config --libs` -lcurl -lm
 
 OBJ = main.o dht22.o sendmysql.o configreader.o cJSON.o restcurl.o calculate.o
 
@@ -20,6 +20,10 @@ clean:
 	rm -r *.o
 
 install:
-	sudo cp humiditypi /usr/local/bin
+	sudo cp humiditypi /usr/bin
 	if [ ! -d /etc/humiditypi ]; then sudo mkdir /etc/humiditypi; fi
 	sudo cp settings.cfg /etc/humiditypi
+
+uninstall:
+	sudo rm /usr/bin/humiditypi
+	rm -r /etc/humiditypi