chore: updates additional files for 2x release

Cargo.toml

@@ -12,11 +12,11 @@ license = "MIT"
 keywords = ["argument", "command", "arg", "parser", "parse"]
 
 [dependencies]
-bitflags  = "0.3.3"
-vec_map   = "0.4"
+bitflags  = "~0.4"
+vec_map   = "~0.4"
 ansi_term = { version = "~0.7", optional = true }
 strsim    = { version = "~0.4.0", optional = true }
-yaml-rust = { version = "~0.2.2", optional = true }
+yaml-rust = { version = "~0.3", optional = true }
 clippy    = { version = "~0.0.35", optional = true }
 
 [features]

LICENSE-MIT

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015 Kevin B. Knapp
+Copyright (c) 2015-2016 Kevin B. Knapp
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -18,4 +18,4 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+SOFTWARE.

README.md

@@ -60,6 +60,8 @@ Here are some key points about the 2.x release
  * Vastly improved ergonomics
  * Numerous bug fixes
 
+![clap Performance Graph](https://github.com/kbknapp/clap-rs/blob/master/clap-perf/clap_perf.png)
+
 #### Breaking Changes
 
 Below is a list of breaking changes between 1.x and 2.x and how you can change your code to update.

clap-perf/clap_perf.dat

@@ -5,3 +5,4 @@
 1.3 2015-09-01 10534 131 14648 874 18213 1070 24101 361
 1.4 2015-09-09 10223 852 13203 749 18924 1216 23492 944
 1.5 2015-11-12 5422 416 7974 680 9723 792 13389  1151
+2.0 2016-01-27 4783 376 5263 481 9651 1015 10577 191

clap-perf/plot_perf.gp

@@ -4,12 +4,12 @@ set terminal png
 set output "clap_perf.png"
 
 set xlabel "Version"
-set xrange [0.9:1.6]
+set xrange [0.9:2.1]
 set ylabel "Time (ns)"
 set yrange [0:35000]
 
-set title "clap-rs Performance by Version"
-set key inside left bottom
+set title "clap-rs Performance (Parse Time - Lower is Better) by Version"
+set key inside right top
 set grid
 set style line 1 lc rgb '#0060ad' lt 1 lw 1 pt 7 ps .5   # --- blue
 set style line 2 lc rgb '#dd181f' lt 1 lw 1 pt 5 ps .5   # --- red