Merge pull request #40 from iovisor/docs

docs: add reference guide and one-liner tutorial

README.md

@@ -4,7 +4,7 @@
 
 BPFtrace is a high-level tracing language for Linux enhanced Berkeley Packet Filter (eBPF) available in recent Linux kernels (4.x). BPFtrace uses LLVM as a backend to compile scripts to BPF-bytecode and makes use of [BCC](https://github.com/iovisor/bcc) for interacting with the Linux BPF system, as well as existing Linux tracing capabilities: kernel dynamic tracing (kprobes), user-level dynamic tracing (uprobes), and tracepoints. The BPFtrace language is inspired by awk and C, and predecessor tracers such as DTrace and SystemTap.
 
-For instructions on building BPFtrace, see [INSTALL.md](INSTALL.md)
+For instructions on building BPFtrace, see [INSTALL.md](INSTALL.md). There is also a [Reference Guide](docs/reference_guide.md) and [One-Liner Tutorial](docs/tutorial_one_liners.md).
 
 ## Examples
 
@@ -241,3 +241,5 @@ Functions:
 - `join(char *arr[])` - Prints the string array
 - `time(char *fmt)` - Print the current time
 - `exit()` - Quit bpftrace
+
+See the [Reference Guide](docs/reference_guide.md) for more detail.