circle ci file, update readme

README

@@ -1,6 +0,0 @@
-rtl-sdr
-turns your Realtek RTL2832 based DVB dongle into a SDR receiver
-======================================================================
-
-For more information see:
-http://sdr.osmocom.org/trac/wiki/rtl-sdr

circle.yml

@@ -0,0 +1,8 @@
+dependencies:
+  pre:
+    - sudo apt-get update; sudo apt-get install libusb-1.0-0-dev; 
+  override:
+    - cd ~/; git clone https://github.com/librtlsdr/librtlsdr.git; cd librtlsdr; mkdir build; cd build; cmake ../; make; sudo make install; sudo ldconfig;
+test:
+  override:
+    -