add "make install-stack" target and update README

2 files changed, 11 insertions, 5 deletions

diff --git a/Makefile b/Makefile
index cfb1ff6..b082c3d 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,9 @@ all:
         stack build
         ln -sfT $$(stack path --local-install-root)/bin ./bin
 
+install-stack:
+        curl -sSL https://get.haskellstack.org/ | sh
+
 .PHONY: all run install install-dev-tools
 
 run: all
diff --git a/README.md b/README.md
index 165479b..5bbaab3 100644
--- a/README.md
+++ b/README.md
@@ -4,22 +4,25 @@ A countdown timer based on Carl Sagan's Cosmic Calendar.
 
 ## Building
 
-Type `make` to build.
+First you need `stack` installed. You can install `stack` by running
+`make install-stack`. This requires `curl` and root access via `sudo`.
+Alternatively, you can follow the instructions here:
+https://docs.haskellstack.org/en/stable/
 
-You need stack already installed.  https://docs.haskellstack.org/en/stable/
+Type `make` to build.
 
 ## Running
 
 Type `make run` to build and then run.
 
-Or type `make install` and then run `countdown`. Make sure `$HOME/.local/bin` is
+Or type `make install` and then run `countdown`. You need `$HOME/.local/bin`
 in your `$PATH` environment variable.
 
 ## Using
 
 Use `p` to pause the clock.
 
-Use `,` and `.` to navigate between calendar entries.
+Use `,` and `.` to navigate between calendar entries (mnemonic: `<` and `>`).
 
 To jump forward and backward in time by one day, use `PgUp` and `PgDown`.
 
@@ -28,5 +31,5 @@ Press `Home` to jump to the current time.
 Press `End` to jump to the New Year's Eve final countdown.
 
 You can also use the arrow keys with or without modifiers to jump forward and
-backward by different amounts. For details about keybindings, see the
+backward by different amounts of time. For details about keybindings, see the
 `handleEvent` function in the source file `countdown.hs`.